{"product_id":"ultra-precision-specific-gravity-hydrometers","title":"Heathrow Scientific Ultra Precision SG Hydrometers","description":"\u003cdiv class=\"bts-heathrow-next20\" style=\"box-sizing:border-box;max-width:1100px;margin:0 auto;padding:12px 0;background:#fff;color:#26332C;font-family:Open Sans,sans-serif;font-size:16px;font-weight:400;line-height:1.7;\"\u003e\n\u003ch2 style=\"font-family:Open Sans,sans-serif;font-size:24px;line-height:1.35;font-weight:600;color:#245B45;margin:30px 0 14px;border-bottom:1px solid #B7D0BF;padding-bottom:10px;\"\u003eChoose the range before the instrument\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 16px;line-height:1.7;\"\u003eChoose a narrow specific-gravity range with 0.0005 scale divisions for focused liquid-density measurements.\u003c\/p\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;align-items:center;gap:28px;margin:24px 0;\"\u003e\n\u003cfigure style=\"box-sizing:border-box;flex:1 1 260px;min-width:0;margin:0;text-align:center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/VEE-GEE-Scientific-Products-ULTRA-PRECISION-SPECIFIC-GRAVITY-HYDROMETERS-_1860__10293.1717551799.jpg?v=1749333516\" alt=\"Heathrow Scientific Ultra Precision SG Hydrometers — Choose the range before the instrument\" loading=\"lazy\" style=\"display:block;width:360px;max-width:100%;height:auto;margin:0 auto;\"\u003e\u003cfigcaption style=\"font-size:13px;line-height:1.5;color:#59665F;max-width:440px;margin:12px auto 0;\"\u003eRepresentative manufacturer-family hydrometer photograph; printed range is not verified from this image. Choose the exact range in the ordering table.\u003c\/figcaption\u003e\u003c\/figure\u003e\u003cdiv style=\"flex:1 1 280px;min-width:0;\"\u003e\n\u003ch3 style=\"font-family:Open Sans,sans-serif;font-size:18px;line-height:1.4;font-weight:600;color:#245B45;margin:0 0 10px;\"\u003eChoose the range before the instrument\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 16px;line-height:1.7;\"\u003eThe 6602 series trades broad coverage for a smaller measuring interval. Start with the expected specific gravity of your liquid, including its normal process variation, then select the catalog number whose full range contains that interval. Neighboring ranges overlap, but they are not identical: for example, 6602-6 spans 0.940–1.010 while 6602-7 spans 1.000–1.070. The ordering rows list every exact range rather than creating arbitrary range combinations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"font-family:Open Sans,sans-serif;font-size:24px;line-height:1.35;font-weight:600;color:#245B45;margin:30px 0 14px;border-bottom:1px solid #B7D0BF;padding-bottom:10px;\"\u003eSeparate scale spacing from test uncertainty\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 16px;line-height:1.7;\"\u003eEvery listed model has 0.0005 subdivisions and a nominal 13-inch (330 mm) length. Scale spacing is not a statement of complete-method uncertainty. These instruments are calibrated at 60°F; record sample temperature and apply the correction required by your method when measuring elsewhere. A hydrometer does not provide automatic temperature compensation simply because the scale is finely divided.\u003c\/p\u003e\n\u003ch2 style=\"font-family:Open Sans,sans-serif;font-size:24px;line-height:1.35;font-weight:600;color:#245B45;margin:30px 0 14px;border-bottom:1px solid #B7D0BF;padding-bottom:10px;\"\u003ePlan free flotation and a consistent reading\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 16px;line-height:1.7;\"\u003eChoose a vessel that lets the instrument float without touching the sides or bottom, with enough sample depth for the selected range. The manufacturer brochure describes reading at eye level where the liquid surface crosses the scale; opaque liquids need the applicable meniscus correction. The photograph represents this instrument family, not a readable confirmation of every printed range. For a much wider process envelope, compare a broad-range instrument before buying several narrow-range models.\u003c\/p\u003e\n\u003cdiv style=\"box-sizing:border-box;background:#F1F7F3;border-left:4px solid #245B45;padding:20px;margin:28px 0;\"\u003e\n\u003ch3 style=\"font-family:Open Sans,sans-serif;font-size:18px;line-height:1.4;font-weight:600;color:#245B45;margin:0 0 10px;\"\u003eChoose the exact catalog number\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 16px;line-height:1.7;\"\u003eCompare the configuration and order unit in the ordering table. The listed pack belongs to one selected catalog number; a family photograph is not an assorted kit unless that row explicitly says assorted.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"font-family:Open Sans,sans-serif;font-size:24px;line-height:1.35;font-weight:600;color:#245B45;margin:30px 0 14px;border-bottom:1px solid #B7D0BF;padding-bottom:10px;\"\u003eRelated choices for your workflow\u003c\/h2\u003e\n\u003cdiv style=\"border-left:3px solid #B7D0BF;padding:2px 0 2px 18px;margin:20px 0;\"\u003e\n\u003ca style=\"color:#245B45;text-decoration:underline;font-weight:600;\" href=\"\/products\/hydrometer-racks-secure-lab-storage-drying\"\u003eHydrometer Racks – Secure Lab Storage \u0026amp; Drying\u003c\/a\u003e\u003cp style=\"margin:0 0 16px;line-height:1.7;\"\u003eConsider a hydrometer rack for organized storage between measurements; this is workflow guidance, not a guarantee of fit for every instrument.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left:3px solid #B7D0BF;padding:2px 0 2px 18px;margin:20px 0;\"\u003e\n\u003ca style=\"color:#245B45;text-decoration:underline;font-weight:600;\" href=\"\/products\/wide-range-specific-gravity-hydrometers\"\u003eHeathrow Scientific Wide Range Specific Gravity Hydrometers\u003c\/a\u003e\u003cp style=\"margin:0 0 16px;line-height:1.7;\"\u003eCompare broad specific-gravity coverage when one wider interval is more useful than these finely divided, narrow ranges.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq_block\" style=\"border-top: 1px solid #e0e0e0; margin-top: 40px; padding-top: 20px;\"\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;\"\u003e\n\u003ch3 style=\"font-size: 1.1rem; font-weight: 600; margin: 0 0 16px 0;\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\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: 600; list-style-position: inside;\"\u003eHow do I select a range?\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 a range containing the expected minimum and maximum specific gravity of your sample. Consult the exact catalog-number row.\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: 600; list-style-position: inside;\"\u003eDo all 22 models have the same divisions?\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;\"\u003eYes. The current manufacturer table specifies 0.0005 for each.\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: 600; list-style-position: inside;\"\u003eIs 0.0005 the accuracy?\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;\"\u003eIt is the scale subdivision. It is not a claim about the uncertainty of your complete measurement procedure.\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: 600; list-style-position: inside;\"\u003eWhat is the calibration temperature?\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;\"\u003e60°F. Follow your method for temperature measurement and corrections.\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: 600; list-style-position: inside;\"\u003eHow long is each hydrometer?\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 listed nominal length is 13 inches (330 mm).\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: 600; list-style-position: inside;\"\u003eIs the photograph exact for every scale?\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;\"\u003eNo. It is a manufacturer-family view; select by the stated catalog number and range, not by apparent markings in the photo.\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: 600; list-style-position: inside;\"\u003eIs this a complete set?\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;\"\u003eNo. Each selected row supplies one hydrometer, not all 22 ranges.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Heathrow Scientific","offers":[{"title":"0.600 to 0.670","offer_id":50280255324458,"sku":"BTS-6602-0","price":30.1,"currency_code":"USD","in_stock":false},{"title":"0.640 to 0.710","offer_id":50280255357226,"sku":"BTS-6602-1","price":30.1,"currency_code":"USD","in_stock":false},{"title":"0.700 to 0.770","offer_id":50280255389994,"sku":"BTS-6602-2","price":33.0,"currency_code":"USD","in_stock":true},{"title":"0.760 to 0.830","offer_id":50280255422762,"sku":"BTS-6602-3","price":33.0,"currency_code":"USD","in_stock":true},{"title":"0.820 to 0.890","offer_id":50280255455530,"sku":"BTS-6602-4","price":33.0,"currency_code":"USD","in_stock":true},{"title":"0.880 to 0.950","offer_id":50280255488298,"sku":"BTS-6602-5","price":33.0,"currency_code":"USD","in_stock":true},{"title":"0.940 to 1.010","offer_id":50280255521066,"sku":"BTS-6602-6","price":33.0,"currency_code":"USD","in_stock":true},{"title":"1.000 to 1.070","offer_id":50280255553834,"sku":"BTS-6602-7","price":33.0,"currency_code":"USD","in_stock":true},{"title":"1.060 to 1.130","offer_id":50280255586602,"sku":"BTS-6602-8","price":33.0,"currency_code":"USD","in_stock":true},{"title":"1.120 to 1.190","offer_id":50280255619370,"sku":"BTS-6602-9","price":33.0,"currency_code":"USD","in_stock":true},{"title":"1.180 to 1.250","offer_id":50280255652138,"sku":"BTS-6602-10","price":33.0,"currency_code":"USD","in_stock":true},{"title":"1.240 to 1.310","offer_id":50280255684906,"sku":"BTS-6602-11","price":35.0,"currency_code":"USD","in_stock":true},{"title":"1.300 to 1.370","offer_id":50280255717674,"sku":"BTS-6602-12","price":35.0,"currency_code":"USD","in_stock":true},{"title":"1.360 to 1.430","offer_id":50280255750442,"sku":"BTS-6602-13","price":35.0,"currency_code":"USD","in_stock":true},{"title":"1.420 to 1.490","offer_id":50280255783210,"sku":"BTS-6602-14","price":38.0,"currency_code":"USD","in_stock":true},{"title":"1.480 to 1.550","offer_id":50280255815978,"sku":"BTS-6602-15","price":38.0,"currency_code":"USD","in_stock":true},{"title":"1.540 to 1.610","offer_id":50280255848746,"sku":"BTS-6602-16","price":34.25,"currency_code":"USD","in_stock":false},{"title":"1.600 to 1.670","offer_id":50280255881514,"sku":"BTS-6602-17","price":34.25,"currency_code":"USD","in_stock":false},{"title":"1.660 to 1.730","offer_id":50280255914282,"sku":"BTS-6602-18","price":34.25,"currency_code":"USD","in_stock":false},{"title":"1.720 to 1.790","offer_id":50280255947050,"sku":"BTS-6602-19","price":38.0,"currency_code":"USD","in_stock":true},{"title":"1.780 to 1.850","offer_id":50280255979818,"sku":"BTS-6602-20","price":34.25,"currency_code":"USD","in_stock":false},{"title":"1.840 to 1.920","offer_id":50280256012586,"sku":"BTS-6602-21","price":34.25,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/VEE-GEE-Scientific-Products-ULTRA-PRECISION-SPECIFIC-GRAVITY-HYDROMETERS-_1860__10293.1717551799.jpg?v=1749333516","url":"https:\/\/bluetigerscientific.com\/products\/ultra-precision-specific-gravity-hydrometers","provider":"Blue Tiger Scientific","version":"1.0","type":"link"}