{"product_id":"hanna-instruments-hi93767a-50-total-nitrogen-low-range-reagents","title":"Hanna Instruments HI93767A-50 Total Nitrogen Low Range Reagents — 50 Tests","description":"\u003cdiv id=\"bts-hi93767a-50-description\" style=\"font-family:'Open Sans',sans-serif;font-weight:300;font-size:1rem;line-height:1.65;box-sizing:border-box;max-width:1400px;margin:0 auto;padding:20px 12px;color:#26332C;background:#fff;\"\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;align-items:center;gap:20px;padding-bottom:20px;margin-bottom:24px;border-bottom:1px solid #e0e0e0;\"\u003e\n\u003cdiv style=\"flex:1 1 360px;min-width:0;box-sizing:border-box;\"\u003e\n\u003ch4 style=\"font-family:'Open Sans',sans-serif;font-weight:300;font-size:1rem;line-height:1.65;box-sizing:border-box;font-weight:400;line-height:1.35;margin:0 0 16px;color:#245B45;\"\u003eTotal Nitrogen Low Range — choose the range for your sample\u003c\/h4\u003e\n\u003cp style=\"font-family:'Open Sans',sans-serif;font-weight:300;font-size:1rem;line-height:1.65;box-sizing:border-box;margin:0 0 16px;\"\u003eChoose this low-range kit when expected total nitrogen is within 0.0–25.0 mg\/L as N and you need 0.1 mg\/L display increments for nutrient monitoring.\u003c\/p\u003e\n\u003cp style=\"font-family:'Open Sans',sans-serif;font-weight:300;font-size:1rem;line-height:1.65;box-sizing:border-box;margin:0 0 16px;\"\u003ePre-dosed digestion and color-development reagents reduce reagent weighing and preparation, while a matched two-stage workflow gives a total-nitrogen result rather than a nitrate-only snapshot. Lot and expiry markings support reagent traceability; follow the supplied instructions for your lot.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cfigure style=\"flex:0 1 310px;min-width:0;margin:0;text-align:center;box-sizing:border-box;\"\u003e\n\u003cimg alt=\"Hanna HI93767A-50 manufacturer reagent set photograph\" height=\"1200\" loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/HI93767A-50_-1200x1200-0dc9311a-9d36-48eb-a5d0-30cb4505da38__52385.1791307577.jpg?v=1793834957\" style=\"width:100%;max-width:300px;height:auto;object-fit:contain;\" width=\"1200\"\u003e\n\u003cfigcaption style=\"font-family:'Open Sans',sans-serif;font-weight:300;font-size:1rem;line-height:1.65;box-sizing:border-box;font-size:0.9rem;margin-top:8px;\"\u003eManufacturer kit photograph: digestion and color-development stages. Photograph is not a verified physical packing list.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#F1F7F3;border-left:3px solid #245B45;padding:20px;box-sizing:border-box;margin:0 0 24px;\"\u003e\n\u003ch4 style=\"font-family:'Open Sans',sans-serif;font-weight:300;font-size:1rem;line-height:1.65;box-sizing:border-box;font-weight:400;line-height:1.35;margin:0 0 16px;color:#245B45;\"\u003eRange and result basis\u003c\/h4\u003e\n\u003cp style=\"font-family:'Open Sans',sans-serif;font-weight:300;font-size:1rem;line-height:1.65;box-sizing:border-box;margin:0 0 16px;\"\u003eHI83314 and HI83399 document Nitrogen Total LR (16) with a 0.0–25.0 mg\/L as N range and 0.1 mg\/L resolution.\u003c\/p\u003e\n\u003cp style=\"font-family:'Open Sans',sans-serif;font-weight:300;font-size:1rem;line-height:1.65;box-sizing:border-box;margin:0 0 16px;\"\u003eDigestion converts organic and inorganic nitrogen to nitrate for the color reaction. The reported result is total nitrogen expressed as N—not a species-selective nitrate, nitrite or ammonia result. Instrument chemical-form conversion does not turn this into a species-specific assay.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch4 style=\"font-family:'Open Sans',sans-serif;font-weight:300;font-size:1rem;line-height:1.65;box-sizing:border-box;font-weight:400;line-height:1.35;margin:0 0 16px;color:#245B45;\"\u003eTest capacity, not a vial count\u003c\/h4\u003e\n\u003cp style=\"font-family:'Open Sans',sans-serif;font-weight:300;font-size:1rem;line-height:1.65;box-sizing:border-box;margin:0 0 16px;\"\u003eOne order is one nominal 50-test reagent pack: up to 49 sample results with one reagent blank. Two-stage chemistry uses digestion and final reaction vials; the test count is not a physical vial count. Additional blanks, QC and repeats consume supplies.\u003c\/p\u003e\n\u003ch4 style=\"font-family:'Open Sans',sans-serif;font-weight:300;font-size:1rem;line-height:1.65;box-sizing:border-box;font-weight:400;line-height:1.35;margin:0 0 16px;color:#245B45;\"\u003eWhat you need for the workflow\u003c\/h4\u003e\n\u003cp style=\"font-family:'Open Sans',sans-serif;font-weight:300;font-size:1rem;line-height:1.65;box-sizing:border-box;margin:0 0 16px;\"\u003eHave the named HI83314 or HI83399 method, its manual-specified vial adapter, a suitable HI839800 reactor, a cooling rack, accurate liquid-transfer equipment for 2 mL and 2 mL transfers, clean wipes, and SDS-directed PPE. Have suitable deionized water and all method-required reagents; check the supplied pack contents before use. Instruments, reactor and transfer equipment are not represented as included.\u003c\/p\u003e\n\u003ch4 style=\"font-family:'Open Sans',sans-serif;font-weight:300;font-size:1rem;line-height:1.65;box-sizing:border-box;font-weight:400;line-height:1.35;margin:0 0 16px;color:#245B45;\"\u003eMatch the instrument method and adapter\u003c\/h4\u003e\n\u003cp style=\"font-family:'Open Sans',sans-serif;font-weight:300;font-size:1rem;line-height:1.65;box-sizing:border-box;margin:0 0 16px;\"\u003eUse the Nitrogen Total LR (16) method documented for HI83314 or HI83399 and the adapter specified by that instrument’s manual. Check that the supplied kit matches your instrument and adapter before use; do not assume other vial formats or adapters are interchangeable.\u003c\/p\u003e\n\u003ch4 style=\"font-family:'Open Sans',sans-serif;font-weight:300;font-size:1rem;line-height:1.65;box-sizing:border-box;font-weight:400;line-height:1.35;margin:0 0 16px;color:#245B45;\"\u003e105 °C digestion, then staged color development\u003c\/h4\u003e\n\u003cp style=\"font-family:'Open Sans',sans-serif;font-weight:300;font-size:1rem;line-height:1.65;box-sizing:border-box;margin:0 0 16px;\"\u003eFor a blank and a sample, add one PERSULFATE\/N packet to each HI93767A-B digestion vial, then 2 mL deionized water to the blank and 2 mL sample to the other vial. Cap and shake vigorously about 30 seconds or until dissolved. Heat for 30 minutes at 105 °C (221 °F); remove after 30 minutes and cool in a rack to room temperature. Add one BISULFITE\/N packet to each, cap and shake gently 15 seconds, then wait 3 minutes. Add one HI93767-0 packet to each, shake gently 15 seconds and wait 2 minutes. Transfer 2 mL of each digest into its respective HI93766V-0LR reaction vial, cap tightly and invert 10 times. Wait 5 minutes, zero with the reacted blank and read the reacted sample. This overview follows the current instrument manuals; read the complete procedure before handling.\u003c\/p\u003e\n\u003ch4 style=\"font-family:'Open Sans',sans-serif;font-weight:300;font-size:1rem;line-height:1.65;box-sizing:border-box;font-weight:400;line-height:1.35;margin:0 0 16px;color:#245B45;\"\u003eReagent blank and repeat measurements\u003c\/h4\u003e\n\u003cp style=\"font-family:'Open Sans',sans-serif;font-weight:300;font-size:1rem;line-height:1.65;box-sizing:border-box;margin:0 0 16px;\"\u003eThe instrument manuals say a blank can be reused for one week when stored in a dark place at room temperature. Use the same reagent lot for blank and sample; the manuals recommend a blank for each set of measurements. This is not an extension of reagent shelf life or a guarantee beyond labelled expiry.\u003c\/p\u003e\n\u003ch4 style=\"font-family:'Open Sans',sans-serif;font-weight:300;font-size:1rem;line-height:1.65;box-sizing:border-box;font-weight:400;line-height:1.35;margin:0 0 16px;color:#245B45;\"\u003eSafety and component documents\u003c\/h4\u003e\n\u003cp style=\"font-family:'Open Sans',sans-serif;font-weight:300;font-size:1rem;line-height:1.65;box-sizing:border-box;margin:0 0 16px;\"\u003eRead all method warnings and the current SDS for the actual lot before handling. The manuals strongly recommend the HI740217 safety shield. Do not use an oven or microwave: leaks may generate a corrosive and potentially explosive atmosphere. Digestion vials remain hot after heating, and final reaction vials become hot during mixing. Store unused vials in their packaging in a cool, dark place; follow local chemical-waste requirements. Hanna classifies this offer as dangerous goods for ground-only shipment. Before use, check the supplied component labels and current SDS for your lot. Use PERSULFATE\/N as specified by the method; do not substitute PERSULFATE\/P. The linked component SDS are references, not a guarantee of a complete lot-matching set.\u003c\/p\u003e\n\u003cdiv class=\"faq_block\" style=\"border-top:1px solid #e0e0e0;margin-top:24px;\"\u003e\u003cdiv itemscope=\"\" itemtype=\"https:\/\/schema.org\/FAQPage\" style=\"width: 100%; padding: 20px 0; font-family: 'Open Sans', sans-serif; font-weight: 300; color: #333;line-height:1.15;\"\u003e\n\u003ch3 style=\"font-size:1.1rem;font-weight:400;margin:0 0 16px;color:#245B45;\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdetails itemprop=\"mainEntity\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Question\" style=\"border: 1px solid #e0e0e0; border-radius: 8px; margin: 0 0 10px 0; background: #fff;\"\u003e\u003csummary itemprop=\"name\" style=\"cursor: pointer; padding: 14px 16px; font-size: 1rem; font-weight: 400; list-style-position: inside;\"\u003eWhen should I choose LR?\u003c\/summary\u003e\u003cdiv itemprop=\"acceptedAnswer\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Answer\" style=\"padding: 0 16px 14px 16px;\"\u003e\u003cp itemprop=\"text\" style=\"font-size: 0.97rem; line-height: 1.6; margin: 0;\"\u003eChoose this low-range kit when expected total nitrogen is within 0.0–25.0 mg\/L as N and you need 0.1 mg\/L display increments for nutrient monitoring. HI83314 and HI83399 document Nitrogen Total LR (16) with a 0.0–25.0 mg\/L as N range and 0.1 mg\/L resolution.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails itemprop=\"mainEntity\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Question\" style=\"border: 1px solid #e0e0e0; border-radius: 8px; margin: 0 0 10px 0; background: #fff;\"\u003e\u003csummary itemprop=\"name\" style=\"cursor: pointer; padding: 14px 16px; font-size: 1rem; font-weight: 400; list-style-position: inside;\"\u003eDoes this measure nitrate or ammonia separately?\u003c\/summary\u003e\u003cdiv itemprop=\"acceptedAnswer\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Answer\" style=\"padding: 0 16px 14px 16px;\"\u003e\u003cp itemprop=\"text\" style=\"font-size: 0.97rem; line-height: 1.6; margin: 0;\"\u003eDigestion converts organic and inorganic nitrogen to nitrate for the color reaction. The reported result is total nitrogen expressed as N—not a species-selective nitrate, nitrite or ammonia result. Instrument chemical-form conversion does not turn this into a species-specific assay.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails itemprop=\"mainEntity\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Question\" style=\"border: 1px solid #e0e0e0; border-radius: 8px; margin: 0 0 10px 0; background: #fff;\"\u003e\u003csummary itemprop=\"name\" style=\"cursor: pointer; padding: 14px 16px; font-size: 1rem; font-weight: 400; list-style-position: inside;\"\u003eHow many sample tests can one pack support?\u003c\/summary\u003e\u003cdiv itemprop=\"acceptedAnswer\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Answer\" style=\"padding: 0 16px 14px 16px;\"\u003e\u003cp itemprop=\"text\" style=\"font-size: 0.97rem; line-height: 1.6; margin: 0;\"\u003eOne order is one nominal 50-test reagent pack: up to 49 sample results with one reagent blank. Two-stage chemistry uses digestion and final reaction vials; the test count is not a physical vial count. Additional blanks, QC and repeats consume supplies.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails itemprop=\"mainEntity\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Question\" style=\"border: 1px solid #e0e0e0; border-radius: 8px; margin: 0 0 10px 0; background: #fff;\"\u003e\u003csummary itemprop=\"name\" style=\"cursor: pointer; padding: 14px 16px; font-size: 1rem; font-weight: 400; list-style-position: inside;\"\u003eWhich photometer method and adapter do I need?\u003c\/summary\u003e\u003cdiv itemprop=\"acceptedAnswer\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Answer\" style=\"padding: 0 16px 14px 16px;\"\u003e\u003cp itemprop=\"text\" style=\"font-size: 0.97rem; line-height: 1.6; margin: 0;\"\u003eUse the Nitrogen Total LR (16) method documented for HI83314 or HI83399 and the adapter specified by that instrument’s manual. Check that the supplied kit matches your instrument and adapter before use; do not assume other vial formats or adapters are interchangeable.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails itemprop=\"mainEntity\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Question\" style=\"border: 1px solid #e0e0e0; border-radius: 8px; margin: 0 0 10px 0; background: #fff;\"\u003e\u003csummary itemprop=\"name\" style=\"cursor: pointer; padding: 14px 16px; font-size: 1rem; font-weight: 400; list-style-position: inside;\"\u003eWhat are the sample volume and heating conditions?\u003c\/summary\u003e\u003cdiv itemprop=\"acceptedAnswer\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Answer\" style=\"padding: 0 16px 14px 16px;\"\u003e\u003cp itemprop=\"text\" style=\"font-size: 0.97rem; line-height: 1.6; margin: 0;\"\u003e2 mL sample and 2 mL deionized-water blank are used in separate digestion vials. Heat at 105 °C for 30 minutes, cool to room temperature, then complete the staged additions and 2 mL transfer into final reaction vials. Do not substitute a generic COD digestion.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails itemprop=\"mainEntity\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Question\" style=\"border: 1px solid #e0e0e0; border-radius: 8px; margin: 0 0 10px 0; background: #fff;\"\u003e\u003csummary itemprop=\"name\" style=\"cursor: pointer; padding: 14px 16px; font-size: 1rem; font-weight: 400; list-style-position: inside;\"\u003eCan I reuse the reagent blank?\u003c\/summary\u003e\u003cdiv itemprop=\"acceptedAnswer\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Answer\" style=\"padding: 0 16px 14px 16px;\"\u003e\u003cp itemprop=\"text\" style=\"font-size: 0.97rem; line-height: 1.6; margin: 0;\"\u003eThe instrument manuals say a blank can be reused for one week when stored in a dark place at room temperature. Use the same reagent lot for blank and sample; the manuals recommend a blank for each set of measurements. This is not an extension of reagent shelf life or a guarantee beyond labelled expiry.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails itemprop=\"mainEntity\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Question\" style=\"border: 1px solid #e0e0e0; border-radius: 8px; margin: 0 0 10px 0; background: #fff;\"\u003e\u003csummary itemprop=\"name\" style=\"cursor: pointer; padding: 14px 16px; font-size: 1rem; font-weight: 400; list-style-position: inside;\"\u003eWhat must I have besides the reagent pack?\u003c\/summary\u003e\u003cdiv itemprop=\"acceptedAnswer\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Answer\" style=\"padding: 0 16px 14px 16px;\"\u003e\u003cp itemprop=\"text\" style=\"font-size: 0.97rem; line-height: 1.6; margin: 0;\"\u003eHave the named HI83314 or HI83399 method, its manual-specified vial adapter, a suitable HI839800 reactor, a cooling rack, accurate liquid-transfer equipment for 2 mL and 2 mL transfers, clean wipes, and SDS-directed PPE. Have suitable deionized water and all method-required reagents; check the supplied pack contents before use. Instruments, reactor and transfer equipment are not represented as included.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails itemprop=\"mainEntity\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Question\" style=\"border: 1px solid #e0e0e0; border-radius: 8px; margin: 0 0 10px 0; background: #fff;\"\u003e\u003csummary itemprop=\"name\" style=\"cursor: pointer; padding: 14px 16px; font-size: 1rem; font-weight: 400; list-style-position: inside;\"\u003eWhat sample interferences and SDS checks matter?\u003c\/summary\u003e\u003cdiv itemprop=\"acceptedAnswer\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Answer\" style=\"padding: 0 16px 14px 16px;\"\u003e\u003cp itemprop=\"text\" style=\"font-size: 0.97rem; line-height: 1.6; margin: 0;\"\u003eChloride above 1000 mg\/L, bromide above 60 mg\/L and chromium above 0.5 mg\/L can interfere. Follow the full method and verify actual lot instructions and component SDS. Before use, check the supplied component labels and current SDS for your lot. Use PERSULFATE\/N as specified by the method; do not substitute PERSULFATE\/P. The linked component SDS are references, not a guarantee of a complete lot-matching set.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":53456353067306,"sku":"BTS-HI93767A-50","price":170.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/HI93767A-50_-1200x1200-0dc9311a-9d36-48eb-a5d0-30cb4505da38__52385.1791307577.jpg?v=1793834957","url":"https:\/\/bluetigerscientific.com\/products\/hanna-instruments-hi93767a-50-total-nitrogen-low-range-reagents","provider":"Blue Tiger Scientific","version":"1.0","type":"link"}