{"product_id":"apera-5052-ai235","title":"Apera 5052 Saltwater Salinity Pen Tester, 0–100 ppt (AI235)","description":"\u003cdiv class=\"bts-r-page\" style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;width:100%;max-width:1400px;margin:0 auto;line-height:1.75;color:#26332C;\"\u003e\n\u003cstyle\u003e.bts-r-page,.bts-r-page *{box-sizing:border-box}.bts-r-page img{max-width:100%;height:auto}.bts-r-selector\u003esummary{list-style:none}.bts-r-selector\u003esummary::-webkit-details-marker{display:none}.bts-r-selector .bts-r-open{display:none}.bts-r-selector[open] .bts-r-open{display:block}.bts-r-selector[open] .bts-r-closed{display:none!important}.bts-r-toggle:before{content:'+'}.bts-r-selector[open] .bts-r-toggle:before{content:'−'}.bts-r-model-card:hover{border-color:#FF931A!important;box-shadow:0 4px 14px rgba(23,43,77,.12)}.bts-r-page a:focus-visible,.bts-r-page summary:focus-visible{outline:3px solid #245B45;outline-offset:4px}.bts-r-page summary{min-height:48px}.bts-r-page table{max-width:100%}.bts-r-page th,.bts-r-page td{overflow-wrap:anywhere}@media(max-width:600px){.bts-r-page{font-size:16px!important}.bts-r-selector-inner{padding:16px!important}.bts-r-model-card{padding:14px!important;gap:12px!important}.bts-r-model-card\u003eimg{width:72px!important;height:72px!important;flex-basis:72px!important}.bts-r-page th,.bts-r-page td{padding:10px!important}}@media(prefers-reduced-motion:reduce){.bts-r-page *{scroll-behavior:auto!important;transition:none!important}}\u003c\/style\u003e\n\u003csection style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;padding:clamp(20px,4vw,48px);background:#F1F7F3;border:1px solid #B7D0BF;border-radius:14px;\"\u003e\u003cdiv style=\"display:flex;flex-wrap:wrap;align-items:center;gap:clamp(24px,4vw,48px);\"\u003e\n\u003cdiv style=\"flex:1 1 340px;min-width:0;\"\u003e\n\u003cp style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;font-size:1rem;line-height:1.75;margin:0 0 16px;\"\u003e\u003cspan style=\"font-size:.8rem;letter-spacing:.12em;font-weight:600;\"\u003eAPERA INSTRUMENTS \/ 5052 \/ AI235\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;font-size:clamp(24px,4vw,34px);font-weight:600;line-height:1.2;letter-spacing:-.02em;color:#245B45;margin:0 0 20px;\"\u003eSaltwater salinity.\u003cbr\u003eDip, stabilize, read.\u003c\/h2\u003e\n\u003cp style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;font-size:1rem;line-height:1.75;margin:0 0 16px;\"\u003eMeasure practical salinity in saltwater with the Apera 5052. Its compact pen format combines a platinum-coated conductivity sensor, automatic temperature compensation and a direct ppt display for aquarium, aquaculture and environmental checks.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 320px;min-width:0;\"\u003e\u003cfigure style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;margin:0;min-width:0;\"\u003e\u003ca aria-label=\"View larger: Manufacturer 5052 product reference.\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/apera-next-5052-main-20261019.webp?v=1792433454\" rel=\"noopener\" target=\"_blank\"\u003e\u003cimg alt=\"Manufacturer 5052 product reference.\" decoding=\"async\" height=\"1600\" loading=\"lazy\" sizes=\"(max-width:600px) calc(100vw - 48px), 680px\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/apera-next-5052-main-20261019.webp?v=1792433454\" srcset=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/apera-next-5052-main-20261019.webp?v=1792433454\u0026amp;width=360 360w, https:\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/apera-next-5052-main-20261019.webp?v=1792433454\u0026amp;width=640 640w, https:\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/apera-next-5052-main-20261019.webp?v=1792433454\u0026amp;width=1000 1000w\" style=\"display:block;width:100%;max-width:520px;height:auto;object-fit:contain;margin:0 auto;\" width=\"1600\"\u003e\u003c\/a\u003e\u003cfigcaption style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;font-size:.86rem;line-height:1.65;color:#5D6C63;margin-top:12px;\"\u003eManufacturer 5052 product reference. Tap or click the image for a larger view.\u003c\/figcaption\u003e\u003c\/figure\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003cdetails class=\"bts-r-selector\" style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;border:1px solid #FF931A;border-radius:10px;padding:0;margin:24px 0;background:#fff;\"\u003e\u003csummary style=\"display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px;background:#FF931A;color:#172b4d;cursor:pointer;border-radius:9px;font-weight:600;line-height:1.5;\"\u003e\u003cspan style=\"display:block;flex:1;min-width:0;\"\u003e\u003cspan style=\"display:block;font-size:clamp(17px,2.6vw,21px);font-weight:700;line-height:1.35;\"\u003eChoose the right meter configuration\u003c\/span\u003e\u003cspan class=\"bts-r-closed\" style=\"display:block;font-size:.88rem;font-weight:400;line-height:1.55;margin-top:5px;\"\u003eClick or tap to compare your options\u003c\/span\u003e\u003cspan class=\"bts-r-open\" style=\"font-size:.88rem;font-weight:400;line-height:1.55;margin-top:5px;\"\u003eCompare below — click or tap here to close\u003c\/span\u003e\u003c\/span\u003e\u003cspan aria-hidden=\"true\" class=\"bts-r-toggle\" style=\"display:flex;align-items:center;justify-content:center;flex:0 0 38px;width:38px;height:38px;border:1px solid rgba(23,43,77,.35);border-radius:50%;background:#fff;font-size:27px;font-weight:400;line-height:1;\"\u003e\u003c\/span\u003e\u003c\/summary\u003e\u003cdiv class=\"bts-r-selector-inner\" style=\"padding:20px;\"\u003e\n\u003cp style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;font-size:1rem;line-height:1.75;margin:0 0 16px;\"\u003eCompare the selected product with the related listings below. Check the application, connection and order contents before choosing.\u003c\/p\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:16px;\"\u003e\n\u003cdiv class=\"bts-r-model-card\" style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;display:flex;gap:16px;align-items:center;flex:1 1 270px;min-width:0;padding:18px;border:2px solid #FF931A;border-radius:10px;background:#FFF9F0;color:#26332C;text-decoration:none;\"\u003e\n\u003cimg alt=\"5052 — Manufacturer photograph of the 5052 in an aquarium workflow.\" height=\"90\" loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/apera-next-5052-use-20261019.webp?v=1792433447\u0026amp;width=180\" style=\"width:90px;height:90px;object-fit:contain;flex:0 0 90px;\" width=\"90\"\u003e\u003cspan style=\"display:block;min-width:0;\"\u003e\u003cstrong style=\"display:block;color:#245B45;font-size:1.08rem;line-height:1.4;\"\u003e5052\u003c\/strong\u003e\u003cspan style=\"display:block;font-size:.9rem;line-height:1.6;margin-top:5px;\"\u003eSalinity Tester · 0–100.0 ppt\u003c\/span\u003e\u003cspan style=\"display:inline-block;margin-top:10px;color:#245B45;font-weight:600;font-size:.88rem;\"\u003eCurrent configuration\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ca class=\"bts-r-model-card\" href=\"https:\/\/bluetigerscientific.com\/products\/apera-instruments-value-series-salt20-salinity-pocket-tester-kit\" style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;display:flex;gap:16px;align-items:center;flex:1 1 270px;min-width:0;padding:18px;border:1px solid #DCE6DF;border-radius:10px;background:#fff;color:#26332C;text-decoration:none;\"\u003e\n\u003cimg alt=\"Apera Salt20 Pocket Salinity Tester Kit (AI214) Pocket Salinity Tester Kit Apera Instruments\" height=\"90\" loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/salt20_1_1876e883-a804-4f8b-a309-2142f5acea19.webp?v=1745180212\u0026amp;width=180\" style=\"width:90px;height:90px;object-fit:contain;flex:0 0 90px;\" width=\"90\"\u003e\u003cspan style=\"display:block;min-width:0;\"\u003e\u003cstrong style=\"display:block;color:#245B45;font-size:1.08rem;line-height:1.4;\"\u003eApera Salt20 Pocket Salinity Tester Kit (AI214)\u003c\/strong\u003e\u003cspan style=\"display:block;font-size:.9rem;line-height:1.6;margin-top:5px;\"\u003eCompare a pocket salinity tester with the optical refractometer; choose the measurement method that fits your samples.\u003c\/span\u003e\u003cspan style=\"display:inline-block;margin-top:10px;color:#245B45;font-weight:600;font-size:.88rem;\"\u003eView product →\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;font-size:1rem;line-height:1.75;margin:0 0 16px;\"\u003eLinked cards open current store listings. Other cards compare configurations; they do not imply current storefront availability.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/details\u003e\u003csection style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;padding:clamp(28px,5vw,56px) 0;border-bottom:1px solid #B7D0BF;\"\u003e\u003cdiv style=\"display:flex;flex-wrap:wrap;align-items:center;gap:clamp(24px,4vw,48px);\"\u003e\n\n\u003cdiv style=\"flex:1 1 100%;min-width:0;\"\u003e\n\u003ch2 style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;font-size:clamp(24px,4vw,34px);font-weight:600;line-height:1.2;letter-spacing:-.02em;color:#245B45;margin:0 0 20px;\"\u003ePractical salinity\u003cbr\u003efor seawater work.\u003c\/h2\u003e\n\u003cp style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;font-size:1rem;line-height:1.75;margin:0 0 16px;\"\u003e5052 converts conductivity to practical salinity using the PSS-78 relationship. It is designed for seawater-type samples, with a 0–100.0 ppt specified range.\u003c\/p\u003e\n\u003cp style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;font-size:1rem;line-height:1.75;margin:0 0 16px;\"\u003ePractical salinity is not a direct chemical assay of total dissolved salts. For a sodium-chloride-specific method or another sample matrix, choose the matching instrument and calibration method.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;padding:clamp(28px,5vw,56px) 0;border-bottom:1px solid #B7D0BF;\"\u003e\u003cdiv style=\"display:flex;flex-wrap:wrap;align-items:center;gap:clamp(24px,4vw,48px);\"\u003e\n\u003cdiv style=\"flex:1 1 320px;min-width:0;\"\u003e\n\u003ch2 style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;font-size:clamp(24px,4vw,34px);font-weight:600;line-height:1.2;letter-spacing:-.02em;color:#245B45;margin:0 0 20px;\"\u003eOne-button operation.\u003cbr\u003eAutomatic compensation.\u003c\/h2\u003e\n\u003cp style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;font-size:1rem;line-height:1.75;margin:0 0 16px;\"\u003eThe pen provides automatic one-point calibration using 50.0 mS\/cm conductivity standard. Automatic temperature compensation covers 0–60°C; the model does not display temperature.\u003c\/p\u003e\n\u003cp style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;font-size:1rem;line-height:1.75;margin:0 0 16px;\"\u003eRinse the sensor when moving between different solutions, remove excess water and wait for a stable reading. Clean gently according to the manual to protect the platinum-black coating.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 320px;min-width:0;\"\u003e\u003cfigure style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;margin:0;min-width:0;\"\u003e\u003ca aria-label=\"View larger: Manufacturer photograph of the 5052 sensing end.\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/apera-next-5052-tip-20261019.webp?v=1792433185\" rel=\"noopener\" target=\"_blank\"\u003e\u003cimg alt=\"Manufacturer photograph of the 5052 sensing end.\" decoding=\"async\" height=\"1600\" loading=\"lazy\" sizes=\"(max-width:600px) calc(100vw - 48px), 680px\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/apera-next-5052-tip-20261019.webp?v=1792433185\" srcset=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/apera-next-5052-tip-20261019.webp?v=1792433185\u0026amp;width=360 360w, https:\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/apera-next-5052-tip-20261019.webp?v=1792433185\u0026amp;width=640 640w, https:\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/apera-next-5052-tip-20261019.webp?v=1792433185\u0026amp;width=1000 1000w\" style=\"display:block;width:100%;max-width:560px;height:auto;object-fit:contain;margin:0 auto;\" width=\"1600\"\u003e\u003c\/a\u003e\u003cfigcaption style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;font-size:.86rem;line-height:1.65;color:#5D6C63;margin-top:12px;\"\u003eManufacturer photograph of the 5052 sensing end. Tap or click the image for a larger view.\u003c\/figcaption\u003e\u003c\/figure\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;padding:clamp(28px,5vw,56px) 0;border-bottom:1px solid #B7D0BF;\"\u003e\u003cdiv style=\"display:flex;flex-wrap:wrap;align-items:center;gap:clamp(24px,4vw,48px);\"\u003e\n\n\u003cdiv style=\"flex:1 1 100%;min-width:0;\"\u003e\n\u003ch2 style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;font-size:clamp(24px,4vw,34px);font-weight:600;line-height:1.2;letter-spacing:-.02em;color:#245B45;margin:0 0 20px;\"\u003eA compact kit\u003cbr\u003efor the sampling round.\u003c\/h2\u003e\n\u003cp style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;font-size:1rem;line-height:1.75;margin:0 0 16px;\"\u003eThe manufacturer lists the 5052 tester, two AAA batteries, calibration solution and a case. IP57 protection supports field use while the small pen body is easy to carry.\u003c\/p\u003e\n\u003cp style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;font-size:1rem;line-height:1.75;margin:0 0 16px;\"\u003eDo not infer an immersion depth or continuous underwater operating rating from the protection class. Keep battery contacts dry and follow the manual when cleaning and replacing batteries.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;padding:clamp(28px,5vw,56px) 0;border-bottom:1px solid #B7D0BF;\"\u003e\u003ch2 style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;font-size:clamp(24px,4vw,34px);font-weight:600;line-height:1.2;letter-spacing:-.02em;color:#245B45;margin:0 0 20px;\"\u003eWhat this order includes.\u003c\/h2\u003e\n\u003cdiv aria-label=\"Order detail table\" role=\"region\" style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;overflow-x:auto;width:100%;max-width:100%;\" tabindex=\"0\"\u003e\u003ctable style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;width:100%;border-collapse:collapse;font-size:1rem;border:1px solid #e0e0e0;table-layout:fixed;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\" style=\"background:#f5f5f5;text-align:left;padding:12px;font-size:1rem;font-weight:700;border:1px solid #e0e0e0;width:50%;overflow-wrap:anywhere;\"\u003eOrder detail\u003c\/th\u003e\n\u003cth scope=\"col\" style=\"background:#f5f5f5;text-align:left;padding:12px;font-size:1rem;font-weight:700;border:1px solid #e0e0e0;width:50%;overflow-wrap:anywhere;\"\u003eConfiguration\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background:#fff;\"\u003e\n\u003cth scope=\"row\" style=\"padding:12px;text-align:left;font-size:1rem;line-height:1.6;vertical-align:top;border:1px solid #e0e0e0;width:50%;font-weight:600;overflow-wrap:anywhere;\"\u003eProduct\u003c\/th\u003e\n\u003ctd style=\"padding:12px;font-size:1rem;line-height:1.6;vertical-align:top;border:1px solid #e0e0e0;width:50%;overflow-wrap:anywhere;\"\u003e5052\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f9f9f9;\"\u003e\n\u003cth scope=\"row\" style=\"padding:12px;text-align:left;font-size:1rem;line-height:1.6;vertical-align:top;border:1px solid #e0e0e0;width:50%;font-weight:600;overflow-wrap:anywhere;\"\u003eManufacturer part number\u003c\/th\u003e\n\u003ctd style=\"padding:12px;font-size:1rem;line-height:1.6;vertical-align:top;border:1px solid #e0e0e0;width:50%;overflow-wrap:anywhere;\"\u003eAI235\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fff;\"\u003e\n\u003cth scope=\"row\" style=\"padding:12px;text-align:left;font-size:1rem;line-height:1.6;vertical-align:top;border:1px solid #e0e0e0;width:50%;font-weight:600;overflow-wrap:anywhere;\"\u003eBlue Tiger SKU\u003c\/th\u003e\n\u003ctd style=\"padding:12px;font-size:1rem;line-height:1.6;vertical-align:top;border:1px solid #e0e0e0;width:50%;overflow-wrap:anywhere;\"\u003eBTS-AI235\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f9f9f9;\"\u003e\n\u003cth scope=\"row\" style=\"padding:12px;text-align:left;font-size:1rem;line-height:1.6;vertical-align:top;border:1px solid #e0e0e0;width:50%;font-weight:600;overflow-wrap:anywhere;\"\u003eOrder contents\u003c\/th\u003e\n\u003ctd style=\"padding:12px;font-size:1rem;line-height:1.6;vertical-align:top;border:1px solid #e0e0e0;width:50%;overflow-wrap:anywhere;\"\u003e5052 tester, two AAA batteries, 50 mS\/cm calibration solution and case, per the manufacturer model listing.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003c\/section\u003e\u003csection style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;padding:clamp(28px,5vw,56px) 0;border-bottom:1px solid #B7D0BF;\"\u003e\u003ch2 style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;font-size:clamp(24px,4vw,34px);font-weight:600;line-height:1.2;letter-spacing:-.02em;color:#245B45;margin:0 0 20px;\"\u003eCheck the fit\u003cbr\u003ebefore ordering.\u003c\/h2\u003e\n\u003cdiv aria-label=\"Specification table\" role=\"region\" style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;overflow-x:auto;width:100%;max-width:100%;\" tabindex=\"0\"\u003e\u003ctable style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;width:100%;border-collapse:collapse;font-size:1rem;border:1px solid #e0e0e0;table-layout:fixed;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\" style=\"background:#f5f5f5;text-align:left;padding:12px;font-size:1rem;font-weight:700;border:1px solid #e0e0e0;width:50%;overflow-wrap:anywhere;\"\u003eSpecification\u003c\/th\u003e\n\u003cth scope=\"col\" style=\"background:#f5f5f5;text-align:left;padding:12px;font-size:1rem;font-weight:700;border:1px solid #e0e0e0;width:50%;overflow-wrap:anywhere;\"\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background:#fff;\"\u003e\n\u003cth scope=\"row\" style=\"padding:12px;text-align:left;font-size:1rem;line-height:1.6;vertical-align:top;border:1px solid #e0e0e0;width:50%;font-weight:600;overflow-wrap:anywhere;\"\u003eSalinity range\u003c\/th\u003e\n\u003ctd style=\"padding:12px;font-size:1rem;line-height:1.6;vertical-align:top;border:1px solid #e0e0e0;width:50%;overflow-wrap:anywhere;\"\u003e0–100.0 ppt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f9f9f9;\"\u003e\n\u003cth scope=\"row\" style=\"padding:12px;text-align:left;font-size:1rem;line-height:1.6;vertical-align:top;border:1px solid #e0e0e0;width:50%;font-weight:600;overflow-wrap:anywhere;\"\u003eResolution\u003c\/th\u003e\n\u003ctd style=\"padding:12px;font-size:1rem;line-height:1.6;vertical-align:top;border:1px solid #e0e0e0;width:50%;overflow-wrap:anywhere;\"\u003e0.01 \/ 0.1 ppt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fff;\"\u003e\n\u003cth scope=\"row\" style=\"padding:12px;text-align:left;font-size:1rem;line-height:1.6;vertical-align:top;border:1px solid #e0e0e0;width:50%;font-weight:600;overflow-wrap:anywhere;\"\u003eAccuracy\u003c\/th\u003e\n\u003ctd style=\"padding:12px;font-size:1rem;line-height:1.6;vertical-align:top;border:1px solid #e0e0e0;width:50%;overflow-wrap:anywhere;\"\u003e±1.5% F.S.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f9f9f9;\"\u003e\n\u003cth scope=\"row\" style=\"padding:12px;text-align:left;font-size:1rem;line-height:1.6;vertical-align:top;border:1px solid #e0e0e0;width:50%;font-weight:600;overflow-wrap:anywhere;\"\u003eCalibration\u003c\/th\u003e\n\u003ctd style=\"padding:12px;font-size:1rem;line-height:1.6;vertical-align:top;border:1px solid #e0e0e0;width:50%;overflow-wrap:anywhere;\"\u003e1 point, automatic; 50.0 mS\/cm standard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fff;\"\u003e\n\u003cth scope=\"row\" style=\"padding:12px;text-align:left;font-size:1rem;line-height:1.6;vertical-align:top;border:1px solid #e0e0e0;width:50%;font-weight:600;overflow-wrap:anywhere;\"\u003eTemperature compensation\u003c\/th\u003e\n\u003ctd style=\"padding:12px;font-size:1rem;line-height:1.6;vertical-align:top;border:1px solid #e0e0e0;width:50%;overflow-wrap:anywhere;\"\u003e0–60°C, automatic; no temperature display\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f9f9f9;\"\u003e\n\u003cth scope=\"row\" style=\"padding:12px;text-align:left;font-size:1rem;line-height:1.6;vertical-align:top;border:1px solid #e0e0e0;width:50%;font-weight:600;overflow-wrap:anywhere;\"\u003ePower\u003c\/th\u003e\n\u003ctd style=\"padding:12px;font-size:1rem;line-height:1.6;vertical-align:top;border:1px solid #e0e0e0;width:50%;overflow-wrap:anywhere;\"\u003eTwo AAA batteries\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fff;\"\u003e\n\u003cth scope=\"row\" style=\"padding:12px;text-align:left;font-size:1rem;line-height:1.6;vertical-align:top;border:1px solid #e0e0e0;width:50%;font-weight:600;overflow-wrap:anywhere;\"\u003eProtection\u003c\/th\u003e\n\u003ctd style=\"padding:12px;font-size:1rem;line-height:1.6;vertical-align:top;border:1px solid #e0e0e0;width:50%;overflow-wrap:anywhere;\"\u003eIP57\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f9f9f9;\"\u003e\n\u003cth scope=\"row\" style=\"padding:12px;text-align:left;font-size:1rem;line-height:1.6;vertical-align:top;border:1px solid #e0e0e0;width:50%;font-weight:600;overflow-wrap:anywhere;\"\u003eDimensions \/ weight\u003c\/th\u003e\n\u003ctd style=\"padding:12px;font-size:1rem;line-height:1.6;vertical-align:top;border:1px solid #e0e0e0;width:50%;overflow-wrap:anywhere;\"\u003e39 × 25 × 176 mm \/ 87 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;font-size:1rem;line-height:1.75;margin:0 0 16px;\"\u003eMatch the stated limits and configuration to your procedure. The Product Specifications tab repeats the order details for quick reference.\u003c\/p\u003e\u003c\/section\u003e\u003csection style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;padding:clamp(28px,5vw,56px) 0;border-bottom:1px solid #B7D0BF;\"\u003e\u003ch2 style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;font-size:clamp(24px,4vw,34px);font-weight:600;line-height:1.2;letter-spacing:-.02em;color:#245B45;margin:0 0 20px;\"\u003eCompare related products.\u003c\/h2\u003e\n\u003cp style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;font-size:1rem;line-height:1.75;margin:0 0 16px;\"\u003e\u003ca href=\"https:\/\/bluetigerscientific.com\/products\/apera-instruments-value-series-salt20-salinity-pocket-tester-kit\" style=\"color:#245B45;font-weight:600;text-decoration:underline;\"\u003eApera Salt20 Pocket Salinity Tester Kit (AI214)\u003c\/a\u003e\u003c\/p\u003e\u003c\/section\u003e\u003csection style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;padding:clamp(28px,5vw,56px) 0;border-bottom:1px solid #B7D0BF;\"\u003e\u003ch2 style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;font-size:clamp(24px,4vw,34px);font-weight:600;line-height:1.2;letter-spacing:-.02em;color:#245B45;margin:0 0 20px;\"\u003e5052 buyer questions\u003c\/h2\u003e\n\u003cdetails class=\"bts-r-faq\" style=\"border:1px solid #DCE6DF;border-radius:7px;margin:0 0 10px;background:#fff;\"\u003e\u003csummary style=\"padding:16px;font-weight:600;line-height:1.4;cursor:pointer;\"\u003eWhat does the 5052 measure?\u003c\/summary\u003e\u003cdiv style=\"padding:0 16px 4px;\"\u003e\u003cp style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;font-size:1rem;line-height:1.75;margin:0 0 16px;\"\u003ePractical salinity in seawater-type samples, calculated from conductivity using PSS-78 and displayed as ppt.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails class=\"bts-r-faq\" style=\"border:1px solid #DCE6DF;border-radius:7px;margin:0 0 10px;background:#fff;\"\u003e\u003csummary style=\"padding:16px;font-weight:600;line-height:1.4;cursor:pointer;\"\u003eWhat is the salinity range?\u003c\/summary\u003e\u003cdiv style=\"padding:0 16px 4px;\"\u003e\u003cp style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;font-size:1rem;line-height:1.75;margin:0 0 16px;\"\u003eThe manufacturer specifies 0–100.0 ppt with ±1.5% full-scale accuracy.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails class=\"bts-r-faq\" style=\"border:1px solid #DCE6DF;border-radius:7px;margin:0 0 10px;background:#fff;\"\u003e\u003csummary style=\"padding:16px;font-weight:600;line-height:1.4;cursor:pointer;\"\u003eDoes it display temperature?\u003c\/summary\u003e\u003cdiv style=\"padding:0 16px 4px;\"\u003e\u003cp style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;font-size:1rem;line-height:1.75;margin:0 0 16px;\"\u003eNo. It applies automatic temperature compensation over 0–60°C without showing a temperature reading.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails class=\"bts-r-faq\" style=\"border:1px solid #DCE6DF;border-radius:7px;margin:0 0 10px;background:#fff;\"\u003e\u003csummary style=\"padding:16px;font-weight:600;line-height:1.4;cursor:pointer;\"\u003eWhich standard is used for calibration?\u003c\/summary\u003e\u003cdiv style=\"padding:0 16px 4px;\"\u003e\u003cp style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;font-size:1rem;line-height:1.75;margin:0 0 16px;\"\u003eUse the specified 50.0 mS\/cm conductivity standard for the automatic one-point calibration.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails class=\"bts-r-faq\" style=\"border:1px solid #DCE6DF;border-radius:7px;margin:0 0 10px;background:#fff;\"\u003e\u003csummary style=\"padding:16px;font-weight:600;line-height:1.4;cursor:pointer;\"\u003eIs this a pH tester?\u003c\/summary\u003e\u003cdiv style=\"padding:0 16px 4px;\"\u003e\u003cp style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;font-size:1rem;line-height:1.75;margin:0 0 16px;\"\u003eNo. The 5052 measures salinity. A separate pH tester is required for pH measurements.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails class=\"bts-r-faq\" style=\"border:1px solid #DCE6DF;border-radius:7px;margin:0 0 10px;background:#fff;\"\u003e\u003csummary style=\"padding:16px;font-weight:600;line-height:1.4;cursor:pointer;\"\u003eWhat powers the tester?\u003c\/summary\u003e\u003cdiv style=\"padding:0 16px 4px;\"\u003e\u003cp style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;font-size:1rem;line-height:1.75;margin:0 0 16px;\"\u003eTwo AAA batteries. The manual also describes automatic power-off and low-battery indication.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails class=\"bts-r-faq\" style=\"border:1px solid #DCE6DF;border-radius:7px;margin:0 0 10px;background:#fff;\"\u003e\u003csummary style=\"padding:16px;font-weight:600;line-height:1.4;cursor:pointer;\"\u003eCan I scrub the electrode?\u003c\/summary\u003e\u003cdiv style=\"padding:0 16px 4px;\"\u003e\u003cp style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;font-size:1rem;line-height:1.75;margin:0 0 16px;\"\u003eDo not rub or abrade the platinum-black sensing surface. Use the cleaning method in the 5052 manual.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails class=\"bts-r-faq\" style=\"border:1px solid #DCE6DF;border-radius:7px;margin:0 0 10px;background:#fff;\"\u003e\u003csummary style=\"padding:16px;font-weight:600;line-height:1.4;cursor:pointer;\"\u003eIs it a universal total-salt measurement?\u003c\/summary\u003e\u003cdiv style=\"padding:0 16px 4px;\"\u003e\u003cp style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;font-size:1rem;line-height:1.75;margin:0 0 16px;\"\u003eNo. Its seawater practical-salinity conversion does not identify individual salts or replace a sample-specific chemical method.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003c\/section\u003e\u003csection style=\"padding:28px;background:#F1F7F3;border:1px solid #B7D0BF;border-radius:12px;\"\u003e\u003ch2 style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;font-size:clamp(24px,4vw,34px);font-weight:600;line-height:1.2;letter-spacing:-.02em;color:#245B45;margin:0 0 20px;\"\u003eChoose the configuration\u003cbr\u003ethat fits your work.\u003c\/h2\u003e\n\u003cp style=\"font-family:'Open Sans',sans-serif;font-weight:300;box-sizing:border-box;font-size:1rem;line-height:1.75;margin:0 0 16px;\"\u003eReview the order contents and the required electrode and calibration setup before ordering. Contact Blue Tiger Scientific if you need help matching the part.\u003c\/p\u003e\n\u003ca href=\"#\" style=\"color:#245B45;font-weight:600;text-decoration:underline;\"\u003eBack to price and ordering ↑\u003c\/a\u003e\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Apera Instruments","offers":[{"title":"Default Title","offer_id":53027537387818,"sku":"BTS-AI235","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/apera-next-5052-main-20261019.webp?v=1792433454","url":"https:\/\/bluetigerscientific.com\/products\/apera-5052-ai235","provider":"Blue Tiger Scientific","version":"1.0","type":"link"}