$50 - $75, Oakton Instruments

WD-35653-11 1413 µS Conductivity/TDS "Singles" Calibration Solution Pouches, 20 pouches each with 20 mL of solution by Oakton

Choose from economical 1-pint solution bottles or individually sealed Singles calibration pouches.

All OAKTON Conductivity/TDS calibration solutions are cross checked using different test methods, premixed, and ready to use.

OAKTON conductivity/TDS solution bottles are labeled with the name and CAS number for all ingredients to conform with Right-to-Know requirements, and includes an MSDS. Solutions come in one pint bottles. Dimensions: 7.75"H x 2.25" dia. Shpg wt: 1.1 lbs.

OAKTON Conductivity Singles pouches are convenient, air-tight pouches with high-precision calibration standards. Ideal for field use-take them to your test site for on-the-spot calibration. Pouches are labeled with equivalent values for ppm in KCl, NaCl and 442 and Conductivity values at 25°C and CAS numbers for Right-to-Know requirements. Each box contains twenty 20 mL pouches. Dimensions: 4.5"L x 5"W x 4.5"H (box). Shpg wt 1 lb per box.

• NIST traceable materials
• ±1% accuracy at 25°C

WD-35700-10 Low-Cost Wall Mount Thermo-Hygrometer by Digi-Sense

Our most economical wall-mount thermohygrometer

This economical thermohygrometer features easy-to-read dial indicators for both humidity and temperature. Use for monitoring indoor room conditions.

• Monitor humidity and temperature
• Requires no batteries or power!