Rite-in-the-Rain - #550F Bound Book, Environmental Pattern Digital Thermometer Six-hole punched for compatible field Select a Mesh Size:NTX350-115 - 350 Micron x 45" (115 cm) Wide A superior 12867 Dissolved Oxygen Testing

Six-hole punched for compatible field binders

The Student Plankton Net is an economical

The pistol-grip trigger switch is easy to operate even when you’re wearing gloves and can be locked to prevent accidental illumination and battery drain

Each package contains 100 waterproof white vinyl label sheets measuring 8

with batteries

Rite in the Rain #550F Bound Book, Environmental Pattern Digital Thermometer Six hole punched for compatible field Select a Mesh Size:NTX350 115 350 Micron x 45" (115 cm) Wide A superior 12867 Dissolved Oxygen Testing Six hole punched for compatible field binders The Student Plankton Net is an economical