Optical Interferometric Gas Concentration Meter FI-8000

Optical Interferometric Gas Concentration Meter FI-8000.Manufactured by Rikein Keiki. Batteries not included.Also comes with Ultra Pure Water meter HI98309, by Hanna Instruments.The HI98309 UPW is the first pure water tester/conductivity meter to measure in 1/1000ths of micro-Siemens and provides on-the-spot and fast checks for minute traces of contamination in your water, assuring top-grade of finished products in processes. A rugged, pocket-sized tester that features graphite electrodes to reduce polarization effects. The HI98309 comes already calibrated, done with freshly prepared low-conductivity solutions in factory due to the high instability of calibration solutions in the UPW range (below 2 µS/cm).Exposed temperature sensor for fast responseAccurate readings of ultra low range 0.000 to 1.999 µS/cmFREE SHIPPING superb for everyday use. High quality materials and excellent craftsmanship ensure long-lasting durability.