{"product_id":"rd-systems-stop-solution-2n-sulfuric-acid","title":"R\u0026D Systems Stop Solution 2N Sulfuric Acid","description":"\u003cheader class=\"wlb-header\"\u003e\n\u003ch2 class=\"wlb-title\"\u003eStop Solution 2N Sulfuric Acid, 6 mL\u003c\/h2\u003e\n\u003cp class=\"wlb-meta\"\u003eby\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"wlb-brand\"\u003eR\u0026amp;D Systems\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e· SKU\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"wlb-sku\"\u003eDY994\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/header\u003e\n\u003csection class=\"wlb-overview\"\u003e\n\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eStop Solution 2N Sulfuric Acid (Catalog # DY994) from R\u0026amp;D Systems is a ready-to-use acidic reagent formulated to halt the enzymatic activity of horseradish peroxidase (HRP) in enzyme-linked immunosorbent assays that use tetramethylbenzidine (TMB) substrates. Each vial contains 6 mL of 2 N sulfuric acid, with typical application volumes of 50–100 µL per well to terminate colour development before optical density measurement. The product is supplied as multiple vials per pack and designed for consistent colour stabilisation in ELISA workflows.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection class=\"wlb-highlights\"\u003e\n\u003ch2\u003eHighlights\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e2 N sulfuric acid solution to stop HRP-catalysed TMB reactions in ELISAs\u003c\/li\u003e\n\u003cli\u003ePre-measured 6 mL aliquots for reproducible use across microplate wells\u003c\/li\u003e\n\u003cli\u003eFacilitates stable endpoint colour for accurate absorbance reading at ~450 nm\u003c\/li\u003e\n\u003cli\u003eSuitable for a wide range of research immunoassays with HRP detection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection class=\"wlb-ataglance\"\u003e\n\u003ch2\u003eAt-a-glance\u003c\/h2\u003e\n\u003cdl\u003e\n\u003cdt\u003eReagent\u003c\/dt\u003e\n\u003cdd\u003e2 N sulfuric acid stop solution\u003c\/dd\u003e\n\u003cdt\u003eVolume\u003c\/dt\u003e\n\u003cdd\u003e6 mL per vial\u003c\/dd\u003e\n\u003cdt\u003eApplication\u003c\/dt\u003e\n\u003cdd\u003eTermination of HRP-TMB reactions in ELISA assays\u003c\/dd\u003e\n\u003cdt\u003eTypical use\u003c\/dt\u003e\n\u003cdd\u003e~50–100 µL per well\u003c\/dd\u003e\n\u003cdt\u003ePack configuration\u003c\/dt\u003e\n\u003cdd\u003e15 vials × 6 mL (per standard listing)\u003c\/dd\u003e\n\u003cdt\u003eCondition\u003c\/dt\u003e\n\u003cdd\u003eNEW — Unused reagent\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003c\/section\u003e\n\u003csection class=\"wlb-applications\"\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cp\u003eThis stop solution is used to quench the enzymatic conversion of TMB by horseradish peroxidase in ELISAs and related immunoassays, stabilizing the colorimetric signal for quantification with standard microplate readers at ~450 nm. It supports research workflows in cytokine, growth factor, antibody and biomarker quantification where accurate endpoint detection is essential.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection class=\"wlb-sustainability\"\u003e\n\u003ch2\u003eSustainability\u003c\/h2\u003e\n\u003cp\u003eBy rehoming surplus lab products, this listing supports waste reduction and resource efficiency.\u003c\/p\u003e\n\u003c\/section\u003e","brand":"R\u0026D Systems","offers":[{"title":"2N \/ 6 mL \/ Pack of 15 \/ New - Unopened (Sealed)","offer_id":52949013987655,"sku":"DY994","price":20.09,"currency_code":"GBP","in_stock":true}],"url":"https:\/\/checkout.wasteless.bio\/products\/rd-systems-stop-solution-2n-sulfuric-acid","provider":"Wasteless Bio","version":"1.0","type":"link"}