"Complete Meter Stick Optics Bench"

The Total Hardness Photometer combines accuracy and ease of use in a simple, portable design. The advanced optical system provides lab-quality accuracy while its user-friendly design is easy for any user making it the perfect photometer for your water quality testing needs. The HI97735 meter measures total hardness in water samples up to 750 mg/L (ppm) CaCO₃.

This dissolved oxygen meter is a rugged, portable, waterproof dissolved oxygen (DO) meter designed to provide reliable measurements under harsh environmental conditions.

This user-friendly meter has a long battery life and plenty of helpful functions.

When you are looking for accurate results anywhere and anytime, look no further than the OHAUS Starter Series of pen meters designed for education.

This convenient device measures dissolved oxygen concentration, saturation, and temperature - all in one!

When you are looking for accurate results anywhere and anytime, look no further than the OHAUS Starter Series of pen meters designed for education.

Simultaneously displays the parameter being measured and temperature in °C or °F.

The DO600-K is a convenient kit which adds versatility for measuring dissolved oxygen in laboratories or out in the field with a 16' (5 m) extension cable and probe weight guard for taking easy measurements in tanks or streams.

The VFM200 measures VOC (Volatile Organic Compound) and formaldehyde concentrations in real-time.

This pH tester is ideal for wastewater, water quality and environmental applications. Compact, water resistant (IP67) instrument fits into the palm of your hand.