"Gravimetry"
Sodium tetrakis[3,5-bis(trifluoromethyl)phenyl]borate hydrate ≥98.0% （通过HPLC和重量分析）
Supplier: TCI
Sodium tetrakis[3,5-bis(trifluoromethyl)phenyl]borate hydrate ≥98.0% （通过HPLC和重量分析）
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Potassium tetrakis(4-chlorophenyl)borate ≥98.0% （通过HPLC和重量分析） anion for the neutral carrier type ion electrode
Supplier: TCI
Potassium tetrakis(4-chlorophenyl)borate ≥98.0% （通过HPLC和重量分析） anion for the neutral carrier type ion electrode
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VWR®, Colour standard solutions ASTM
Supplier: VWR Chemicals
Ready to use colour solutions that are prepared gravimetrically on a weight/weight basis.
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VWR®, Colour standards, Saybolt
Supplier: VWR Chemicals
Ready to use colour solutions that are prepared gravimetrically on a weight/weight basis.
Expand 14 Items
Sodium tetrakis(4-fluorophenyl)borate hydrate ≥98.0% （通过HPLC和重量分析）
Supplier: TCI
Precipitation reagent for Cs and titrimetric reagent for nonionic surfactants
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VWR®, Colour standards, Platinum-Cobalt (Pt-Co, Hazen)
Supplier: VWR Chemicals
Ready to use colour solutions that are prepared gravimetrically on a weight/weight basis and are designed to measure the visual colour of water supplies.
Expand 11 Items
VWR®, Gardner colour standards
Supplier: VWR Chemicals
Ready to use colour solutions that are prepared gravimetrically on a weight/weight basis that are designed for grading the colour of similarly coloured liquids, such as resins, varnishes, lacquers, drying oils, fatty acids, lecithin's, sunflower and linseed oil.
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J.T.Baker® BAKER INSTRA-ANALYZED®, Aluminium AA Standard
Supplier: Avantor
The standard is prepared by the careful dilution of the metal or its salt, usually 99,99% pure as verified by arc emission spectrometry.