REAGENT

2-(2,4,5,7-Tetrabromo-6-hydroxy-3-oxo-3H-xanthen-9-yl)terephthalic acid

95%

CAS:108703-40-8

Formula:C₂₁H₈Br₄O₇

MW:691.9 g/mol

฿36,000.00

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REAGENT

Sulfate-ionophore I

98%

CAS:37042-63-0

฿3,160.00

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REAGENT

Mercaptoalkyl-FunctionalisedSilica

MK-I

฿720.00

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REAGENT

Sodium sulfide

90%

CAS:1313-82-2

Formula:Na₂S

MW:78.04 g/mol

฿590.00

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REAGENT

Sodium tungstate indicator

25g/L in H2O

CAS:13472-45-2

Formula:Na₂WO₄

MW:293.82 g/mol

฿990.00

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REAGENT

Sodium diethyldithiocarbamate test solution

Special for pharmacopoeia

CAS:148-18-5

Formula:C₅H₁₀NNaS₂

MW:171.26 g/mol

฿1,500.00

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REAGENT

Sulfide standard solution

1000μg/mL, matrix: 0.025mol/L NaOH, uncertainty (k=2): 5%

฿1,000.00

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REAGENT

Sulfide standard solution

400μg/mL, matrix: 0.025mol/L NaOH, uncertainty (k=2): 5%

฿800.00

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REAGENT

Sulfide standard solution

100μg/mL, matrix: 0.025mol/L NaOH, uncertainty (k=2): 5%

฿800.00

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REAGENT

Sulfide standard solution

10μg/mL, matrix: 0.025mol/L NaOH, uncertainty (k=2): 1μg/mL

฿800.00

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