WZB-F A1 (Waterproof) Portable Digital Refractometer, Salinity Range 0~28%, Shanghai INESA Physico-Optical Instrument CompanyLimited (CAT#: STEM-AIAE-3102-LGZ)

Antifreeze large TFT backlit color screen. A variety of ranges to choose from, and can be freely combined.

Salinity range: 0~28%
Salinity Min Reading: 0.1
Salinity Accuracy: ±0.2
Refractive index range: 1.3330~1.3900
Minimum reading of refractive index: 0.0001
Refractive index accuracy: ±0.0003

1. Automatic temperature compensation function.
2. User-defined zero point mode, which can easily adapt to different measurement environments.
3. Ergonomic design, environmentally friendly and durable materials.
4. Anti-light interference.
5. Pass: IP65 grade waterproof and dustproof verification.

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