500 mL, GFS Chemicals, Solutions
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Nessler Reagent (Mercuric Potassium Iodide, Solution)
GFS ChemicalsNFPA#: 4-0-3 Specific Gravity: 1.097 For ammonia determination. Prepared per ACS Reagent Chemicals, 10th Edition, page 103.
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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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NaOCl CAS#: 7681-52-9 F.W.: 74.44
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Potassium Chloride, 1 N Solution
GFS ChemicalsPotassium Chloride Solution, 1 N, CAS 7447-40-7, Item 384. Potassium Chloride is a metal salt created from Chlorine and Potassium. In powder form, Potassium Chloride has a white or colorless crystal appearance and is odorless. Potassium Chloride has been used in the production of fertilizers,…
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Conductivity Standard, 400 uS/cm
GFS ChemicalsMade from potassium chloride. Conductivity 400 +/- 4 uS/cm NIST Traceable
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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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Digestion Reagent for Kjeldahl Nitrogen
GFS ChemicalsCatalyst for Kjeldahl Nitrogen Test (Standard Methods), replacement for Mercury Sulfate digest solution.
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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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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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Ammonium Molybdate Solution, 4%
GFS Chemicals(NH4)6Mo7O24•4H2O CAS#: 12054-85-2 F.W.: 1235.86 For Phosphate by Ascorbic Acid (APHA) method.
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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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Sodium Hypochlorite Solution, 10-13% Available Chlorine
GFS ChemicalsNaOCl CAS#: 7681-52-9 F.W.: 74.44
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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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Hydrogen Peroxide, 50% Solution
GFS ChemicalsH2O2 CAS#: 7722-84-1 F.W.: 34.02 Retest concentration regularly.
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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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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 uS/cm
GFS ChemicalsMade from potassium chloride. Conductivity 100 +/- 1 uS/cm NIST Traceable
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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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Stannous Chloride, Reagent I
GFS ChemicalsSnCl2•2H2O CAS#: 10025-69-1 F.W.: 225.63 APHA for Phosphate