Extech TB400 Portable Turbidity Meter
The Extech TB400 Portable Turbidity Meter conveniently tests the turbidity of water up to 1000 NTU.
Features
- Requires only a 10mL sample size
- Battery operated for field and on-site testing
- Splash-proof front panel
Image | Part# | Product Description | Price | Stock | Order | |
---|---|---|---|---|---|---|
![]() | TB400 | Portable turbidity meter | $619.99 | Usually ships in 1-2 weeks |

Image | Part# | Product Description | Price | Stock | Order | |
---|---|---|---|---|---|---|
![]() | BTL10 | 10mL test bottles for CL500/TB400, pack of 2 | $25.99 | Drop ships from manufacturer | ||
![]() | NTU-TB | Turbidity standard solutions, 0 NTU and 100 NTU bottle | $29.99 | Drop ships from manufacturer |


Extech's TB400 measures turbidity up to 1000 NTU. A microprocessor-based circuitry assures high accuracy and repeatable readings. Its portable design and splash-proof front panel allow for direct on-site measurements. Typical applications include the measurement of municipal water, food and beverage water, or other aqueous solutions where fluid clarity is important.
- Range (NTU): 0.00 to 50.00 NTU, 50 to 1000 NTU
- Resolution: 0.01 NTU
- Accuracy: ±5% FS or ±0.5 NTU, whichever is greater
- Light Source: LED, 850nm
- Standard: designed to meet ISO 7027
- Response Time: <10 seconds
- Dimensions: 6.1 x 3.0 x 2.4" (155 x 76 x 62mm)
- Weight: 11.3oz (320g)
- (1) TB400 meter
- (1) 0 NTU standard solution test bottle
- (1) 100 NTU standard solution test bottle
- (1) Cleaning solution (distilled water)
- (6) AAA batteries
- (1) Hard carrying case
The TB400 is designed to meet ISO 7027 standards.
The TB400 is powered by (6) AAA batteries.
The TB400 has an accuracy of +/-0.5 NTU.
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