Turbidity Calibration Solution Kit, 20/100/400/800 NTU, 20 Ml Each, 4 PCS Standard Turbidity Solution Refill For TN2000 Turbiditymeter, Shockproof Protective Insert, Sealed Bottle Design

About these items Calibration solutions: These are turbidity calibration solutions available in different packs. A 4 - pack with concentrations of 20 NTU, 100 NTU, 400 NTU, and 800 NTU is compatible with either TN2000 or TN1000 digital water turbidity meters, and a single 0 NTU solution for zero - point calibration. Sealed and disposable design: The solutions come in sealed bottles (non - openable) for the 4 - pack, avoiding contamination and concentration drift for single - use calibration. The disposable 100ml solution also prevents contamination from reuse. Reliable quality: Being EPA - approved, these calibration solutions ensure authoritative and traceable calibration data, which is crucial for professional water quality analysis. Convenience: The 4 - pack and 0 NTU solutions require no preparation, allowing for quick calibration in seconds. The 100ml solution offers cost - effective multiple calibrations. Sa fe and stable: The solutions have a harmless, non - corrosive formula compliant with safety and laboratory security standards. High - molecular polymer technology ensures a stable and uniform formula with no precipitation or drift. Key Differences The 4 - pack calibration solutions (TN500 - 1 for TN2000 and TN200 - 1 for TN1000) have multiple non - zero calibration values (20, 100, 400, 800 NTU) in 20ml sealed bottles for single - use calibration. In contrast, the TN500 - 2 solution is a single 0 NTU calibration solution with a 100ml volume, used for zero - point calibration and multiple calibrations due to its larger volume. Specifications For TN500 - 1: Item Model Number: TN500 - 1 Calibration Value: 20NTU, 100NTU, 400NTU, 800 NTU Volume: 0.7 oz / 20 ml Net Weight: 0.34 lbs / 0.155 kg Dimensions: 1.18 x 1.18 x 2.76 in / 30 x 30 x 70 mm For TN200 - 1: Item Model Number: TN200 - 1 Calibration Value: 20NTU, 100NTU, 400NTU, 800 NTU Volume: 0.7 oz / 20 ml Net Weight: 0.34 lbs / 0.155 kg Dimensions: 1.18 x 1.18 x 2.76 in / 30 x 30 x 70 mm For TN500 - 2: Item Model Number: TN500 - 2 Calibration Value: 0.0 NTU Volume: 3.38 oz / 100 ml Net Weight: 0.25 lbs / 0.115 kg Dimensions: 1.97 x 1.97 x 3.27 in / 50 x 50 x 83 mm Package Content For TN500 - 1: 4 x Calibration Solution For TN200 - 1: 4 x Calibration Solution For TN500 - 2: 1 x Calibration Solution