preventing lime scale rings and staining

MA9001 is a lab grade pH 1

5 oz — Up to half the weight of comparable testers

"This is a terrific addition and you'll want a digital refractometer if you spend any time at all with saltwater aquariums

Read the precise phosphate concentration in ppm (mg/L) PO₂

HI96822 Digital Seawater Refractometer | Salinity & Specific Gravity | Hanna seychelle bundle preventing lime scale rings andThe HI96822 is a rugged, portable digital refractometer designed for the measurement of salinity of natural or artificial seawater. The HI96822 displays results in three popular measurement units: Practical Salinity Units (PSU), salinity in parts per thousands (ppt) and specific gravity (S. G. (20 20)). The instrument's high accuracy and simple operation gives reliable results each and every time. All readings are automatically compensated for