Hach, Light Absorption, Supplies
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Gelex Secondary Standards Kit, for 2100P Portable Turbidimeter (includes 1 sealed vial each, 0-10 NTU, 10-100 NTU, 100-1000 NTU) Hach products are intended for sale/shipment within the US only. International customers should contact their local Hach distributor to place orders for Hach products.
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