GFS Chemicals, 500 mL, Solutions
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Conductivity Standard, 100 uS/cm
GFS ChemicalsMade from potassium chloride. Conductivity 100 +/- 1 uS/cm NIST Traceable
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Conductivity Standard, 1,000 uS/cm
GFS ChemicalsMade from potassium chloride. Conductivity 1,000 +/- 10 uS/cm NIST Traceable
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Potassium Chloride, Solution, 4 M
GFS ChemicalsKCl CAS#: 7447-40-7 F.W.: 74.55 For pH electrodes. 4 mol/L
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Sodium Hypochlorite Solution, 10-13% Available Chlorine
GFS ChemicalsNaOCl CAS#: 7681-52-9 F.W.: 74.44
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Potassium Permanganate, Solution, 0.891 g/L
GFS ChemicalsKMnO4 CAS#: 7722-64-7 F.W.: 158.04 Colorimetric surrogate standard for 10.0 mg/L free chlorine in DPD colorimetric method.
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Ammonium Sulfide, 20% Aqueous Solution (ACS)
GFS Chemicals(NH4)2S CAS#: 12135-76-1 F.W.: 68.14 20 wt % in water
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Stannous Chloride, Reagent I
GFS ChemicalsSnCl2•2H2O CAS#: 10025-69-1 F.W.: 225.63 APHA for Phosphate
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Sodium Acetate, Solution, 20% in Water
GFS ChemicalsCH3COONa•3H2O CAS#: 6131-90-4 F.W.: 136.08 Iron and copper free.
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Conductivity Standard, 50,000 uS/cm
GFS ChemicalsMade from potassium chloride. Conductivity 50,000 +/- 500 uS/cm
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NaOCl CAS#: 7681-52-9 F.W.: 74.44
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Triton® X-100
GFS Chemicals(C8H17)C6H4(OCH2CH2)nOH CAS#: 9036-19-5 Polyoxyethylene(10) isooctylphenyl ether. n in formula is about 10.
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Conductivity Standard, 10,000 uS/cm
GFS ChemicalsMade from potassium chloride. Conductivity 10,000 +/- 100 uS/cm NIST Traceable
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Electrode Storage Solution, Acidic
GFS ChemicalsContains potassium hydrogen phthalate and potassium chloride and has a pH near 4.
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Sodium Sulfite, Zero Dissolved Oxygen Solution
GFS ChemicalsNa2SO3 CAS#: 7757-83-7 F.W.: 126.04 0 mg/L dissolved oxygen
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TPTZ Ferrous Sulfate Solution, 0.00050 Mol/L
GFS ChemicalsReagent solution for the determination of microgram amounts of EDTA, B Kratochvil and M.C. White, Anal. Chem., 37, 111 (1965)
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Lanthanum Chloride, Solution, 10%
GFS ChemicalsLaCl3•7H2O CAS#: 10025-84-0 F.W.: 371.37 Suitable for flame enhancement in Atomic Absorption.
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Ferric Chloride Solution, 10% W/V
GFS ChemicalsFeCl3•6H2O CAS#: 10025-77-1 F.W.: 270.30 Reagent Grade
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Conductivity Standard, 100,000 uS/cm
GFS ChemicalsMade from potassium chloride. Conductivity 100,000 +/- 1,000 uS/cm
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Ammoniacal Buffer, pH 10, for EDTA Titrations
GFS ChemicalsNH4OH+NH4Cl Ammonium Hydroxide-Ammonium Chloride Buffer. Prepared according to REAGENT CHEMICALS, ACS SPECIFICATIONS.
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Stannous Chloride, 10% W/V Solution
GFS ChemicalsSnCl2•2H2O CAS#: 10025-69-1 F.W.: 225.63 For mercury determination
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Hydrogen Peroxide, 50% Solution
GFS ChemicalsH2O2 CAS#: 7722-84-1 F.W.: 34.02 Retest concentration regularly.