{"product_id":"hanna-hi93735-0-total-hardness-lr-mr-hr-assortment","title":"Hanna HI93735-0 Total Hardness Reagents — LR\/MR\/HR Assortment","description":"\u003cdiv id=\"bts-hi93735-0-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;\"\u003eCover more than one total-hardness range with the correct chemistry\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 the mixed HI93735-0 assortment when your work genuinely spans low, medium and high total hardness. Keep range-specific reagent A matched to the selected method, with the indicator, buffer and fixing reagent specified in the instrument manual.\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 HI93735-0 manufacturer reagent photograph\" height=\"1200\" loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/total-hardness-colorimetric-reagents-100-tests-hi93735-0__31479.1563396167.jpg?v=1793907603\" 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 identification photo; labels do not establish current packing, stock lot or expiry.\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;\"\u003eChoose the right role, range and method\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;\"\u003eTotal hardness as CaCO3: LR 0–250 mg\/L; MR 200–500 mg\/L; HR 400–750 mg\/L.\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;\"\u003eHI97735, HI83300 and HI83399 manuals explicitly list HI93735-0. The three ranges use different A reagents; this is not one chemistry with a wider numerical display range. Total hardness measures the calcium\/magnesium response on a CaCO3 equivalent basis. Alkalinity can use the same unit but measures a different property and requires different reagents.\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;\"\u003eChoose mixed-range or single-range according to actual use\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;\"\u003eIf you routinely work in just one range, the separately offered HI93735-00 (LR), HI93735-01 (MR) or HI93735-02 (HR) may be the appropriate refill. This page is only for mixed HI93735-0 and does not replace those products. Choose by expected sample range and exact instrument method, not a blanket savings assumption.\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;\"\u003eCapacity clarification before relying on a pack 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;\"\u003eThe current US manufacturer listing calls HI93735-0 a 100-test product. HI97735, HI83300 and HI83399 manuals instead list 300 total tests: 100 LR + 100 MR + 100 HR. These statements conflict. The manual capacity is quoted as a method\/order reference, not an unqualified promise of the current US physical pack. Confirm the supplied packing and usable capacity before ordering to a required test count.\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;\"\u003eChemistry and equipment to check\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 documented methods require HI93735IND-0 indicator, the selected HI93735A-LR, HI93735A-MR or HI93735A-HR, HI93735B-0 buffer and HI93735C-0 fixing reagent. This mixed reagent assortment is not a photometer starter kit. Have a compatible instrument, correct cuvette\/cap\/stopper, accurate 0.5 mL dosing equipment, refilling pipette and a clean wiping cloth. CAL Check standards are separate verification materials, not analytical reagent replacements. Bottle fill volumes, packet counts and accessory inclusion are not inferred from doses or photographs.\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;\"\u003eProtect the range-specific color measurement\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;\"\u003eOn HI97735, select LR, MR or HR before preparing the sample. The method uses 0.5 mL sample, 0.5 mL indicator, 9 mL of the matching A reagent and two drops of B. Zero before adding one packet of C; gently shake for 20 seconds before reading. Use the complete instructions for your exact instrument; excessive heavy metals can interfere. No heating step is specified in these total-hardness methods.\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;\"\u003eRead all six component safety sheets\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 current US SDS for A-LR, A-MR, A-HR, indicator, B and C, not a single generic hardness sheet. Follow supplied lot labels for handling, storage, expiry and disposal. Photo labels identify the family but do not establish current packing, fill volume or stock expiry.\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 is the mixed assortment useful instead of a single-range refill?\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 HI93735-0 when your actual samples and programs require multiple total-hardness ranges. For one regular range, consider the separately offered HI93735-00 LR, HI93735-01 MR or HI93735-02 HR. The mixed assortment is a separate SKU; no automatic saving or longer useful life is guaranteed.\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 LR, MR and HR ranges?\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 HI97735, HI83300 and HI83399 methods specify LR 0–250 mg\/L, MR 200–500 mg\/L and HR 400–750 mg\/L, all as CaCO3. Match the instrument program and the corresponding A reagent. Overlapping numerical intervals do not make A-LR, A-MR and A-HR 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;\"\u003eIs total hardness the same as alkalinity because both use CaCO3 units?\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. This method responds to calcium and magnesium for total hardness. Alkalinity concerns acid-neutralizing capacity. A common CaCO3 equivalent unit does not make the properties or reagents interchangeable; this is not an alkalinity refill.\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 the current pack guarantee 300 tests?\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;\"\u003eNot yet established for the current US offer. The US listing says 100 tests, while HI97735, HI83300 and HI83399 manuals explicitly list 100 LR + 100 MR + 100 HR, or 300 total. We retain that manual-listed capacity with this qualification; confirm physical packing before relying on a count. It does not mean 300 tests of any one range.\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 component identities belong to this workflow?\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 manuals specify HI93735IND-0 indicator; one of HI93735A-LR, HI93735A-MR or HI93735A-HR; HI93735B-0 buffer; and HI93735C-0 fixing reagent. All six component SDS are linked. Per-test doses and the factory photo do not establish supplied bottle fill volumes or packet counts.\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 instruments have direct manual 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;\"\u003eHI97735, HI83300 and HI83399 each explicitly list mixed HI93735-0 and their total-hardness LR\/MR\/HR procedures. Use the exact-model manual and matching cuvette system. A photometer measuring another hardness or alkalinity method is not automatically compatible.\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 else is required, and is a heater needed?\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 compatible photometer, correct cuvette\/cap\/stopper, accurate small-volume dosing equipment, refilling pipette and lint-free wipe. These accessories and CAL Check standards are not promised in the reagent assortment. No heater is prescribed in the cited total-hardness methods.\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 steps and interferences matter most?\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;\"\u003eOn HI97735, prepare with the correct A reagent, indicator and B, then zero before adding C. Shake gently for the specified 20 seconds and keep the cuvette exterior clean and orientation consistent. Excessive heavy metals may interfere. Follow the full exact-model procedure and all component SDS rather than a generic water-test routine.\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":53471327486250,"sku":"BTS-HI93735-0","price":181.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/total-hardness-colorimetric-reagents-100-tests-hi93735-0__31479.1563396167.jpg?v=1793907603","url":"https:\/\/bluetigerscientific.com\/products\/hanna-hi93735-0-total-hardness-lr-mr-hr-assortment","provider":"Blue Tiger Scientific","version":"1.0","type":"link"}