model

Range (hardness)CaCO3）

application

Analyzable frequency

accuracy

DUROVAL@1Drip hardness

1drip=10mg/l，0.1mmol/l

Rapid determination of water hardness

300drip/bottle

10mg/l

0.1mmol/l

DUROVAL@1Drip alkalinity

1drip-17.8mg/l，0.2mmol/l

Rapid determination of alkalinity

300drip/bottle

18mg/l

0.2mmol/l

DUROVAL@Ahardness

0-534mg/l，0-5.3mmol/l

Indicator for rapid detection of hardness

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9mg/l

0.09mmol/l

DUROVAL@APhardness

0-534mg/l，0-5.3mmol/l

The indicator is in powder form

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1.8mg/l

0.02mmol/l

DUROVAL@Bhardness

0-36mg/l，0-0.36mmol/l

Indicator for rapid detection of hardness

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0.9mg/l

0.01mmol/l

DUROVAL@BPhardness

0-36mg/l，0-0.36mmol/l

The indicator is in powder form

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0.9mg/l

0.01mmol/l

DUROVAL@Cbasicity

0-356mg/l，0-3.56mmol/l

Rapid determination of alkalinity

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9mg/l

0.09mmol/l

DUROVAL@ChlorideChloride ion/Chloride radical

0-300mg/l，0-3.0mmol/l

Chloride concentration in water

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10mg/l

0.1mmol/l

DUROVAL@CO2

0-200mg/l，0-2.0mmol/l

Detecting free carbonic acid

DUROVAL@CPM

0-356mg/l，0-3.56mmol/l

Alkalinity,PValue,

burdenmprice

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9mg/l

0.09mmol/l

DUROVAL@Ks4.3

0-200mg/l，0-2.0mmol/l

measurepH4.3For titration

Acidity at the endpoint

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5mg/l

0.05mmol/l

WATER HARDNESS DUO

0-534mg/l，0-5.3mmol/l

0-36mg/l，0-0.36mmol/l

Duroval@A +B

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9mg/l

0.09mmol/l

DUROVAL@SO4Sulfate radical

0-300mg/l SO4

Sulfate ion in water

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10mg/l

0.1mmol/l

DUROVAL@TI

0-534mg/l，0-5.3mmol/l

total iron determination

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9mg/l

0.09mmol/l

DUROVAL@TP

0-534mg/l，0-5.3mmol/l

Total phosphorus determination

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9mg/l

0.09mmol/l