Hanna HI70007G pH 7.01 Calibration Buffer - GroLine Sachets (25 x 20mL) emergency water storage The HI1285-5 uses a DIN

The HI1285-5 uses a DIN connector

The Milwaukee CD610 Total Dissolved Solids High Range (PPM)  Pen is designed for aquariums

✅ Automatic Temperature Compensation (ATC): 5°C to 50°C (41°F to 122°F)

01 calibration buffer solution sachet

Hanna HI70007G pH 7.01 Calibration Buffer - GroLine Sachets (25 x 20mL) emergency water storage The HI1285-5 uses a DINHanna HI70007G pH 7. 01 Calibration Buffer Professional GroLine Sachets The Hanna HI70007G pH 7. 01 Calibration Buffer is a high precision, NIST traceable calibration standard designed specifically for hydroponics, aquaponics, greenhouses, and water quality testing applications. Each box contains 25 individually sealed 20mL sachets that deliver fresh, uncontaminated pH 7. 01 buffer solution every time, ensuring optimal meter accuracy and reliable