Hodnota pH
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Barva pufru
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pH buffer
CRM standard pufru pH = 4,00 ± 0,01, 25 °C, 500 ml (červený)
CRMH40525C
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CRM standard pufru pH = 4,00 ± 0,01, 25 °C, 500 ml
CRM1040525C
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CRM Pufr Reagecon, pH 10,00, modrý, 25°C, 500ml
CRMH100525C
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CRM Pufr Reagecon, pH 10,00, barevný, 25°C, 500ml
CRM1100525C
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Calcium Carbonate pH Standard (used as saturated calcium hydroxide solution), 30g
SRM2193b
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Boric Acid Acidimetric Standard, 100 g
SRM973
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