The ready-to-use pack of formazin-based turbidity standards, with exact concentrations for your turbidimeter: 10/20/100/800 NTU, suitable for Hach® instruments.
The ready-to-use pack of formazin-based turbidity standards, with exact concentrations for your turbidimeter: <0.1/20/100/800 NTU, suitable for Hach® instruments.
The ready-to-use pack of formazin-based turbidity standards, with exact concentrations for your turbidimeter: <0.1/20/200/1000/4000 NTU, suitable for Hach® instruments.
Ready-to-use with exact concentrations <0.1/20/200/1000/4000 NTU for the turbidimeter: Formazin-based primary standards, suitable for Hach® instruments.
Ready-to-use with exact concentrations <0.1 + 20 NTU (2 times each) for the turbidimeter: Formazin-based primary standards, suitable for Hach® instruments.