The T-CAL® sets with formazine based, long time stable primary standards are offered in different concentrations, fitting perfectly to your instrument for calibration and verification.

• Suitable for Hach® instruments
• Stabilised solution with long shelf life
• Prevention of measurement errors due to accurate mixing
• Save time and eliminate errors - no need for dilution
• Avoid operator liability related to improper dilutions
• Use continually for up to 24 months from production

T-CAL® Turbidity standards are stable formazin standards prepared in ready-to-use concentrations to ensure accurate turbidity measurements. All concentrations are verified to meet tight quality control specifications, are EPA and ISO compliant for reporting purposes and guaranteed to save you time. As a primary standard, T-CAL® Turbidity standards can be used to calibrate or verify any manufacturer’s turbidimeter.