Ph Replacement Probe Aquarium Hydroponic Laboratory Electrode Ph Meter Potential Test Bnc Q9 Connec<br>100% new and high quality<br> BNC connector, suitable for most pH meter and controller with BNC connector.<br> Suitable for wide range of application: Aquariums, Hydroponics, Laboratory etc.<br> Measurement range: 0.00~14.00 PH<br> Zero-point: 7 +- 0.5PH<br> Alkali Error: 0.2PH<br> Theoretical Percentage Slope: 98.5%<br> Internal Resistance: 250M<br> Response Time: 1min<br> Operating Temperature: 0-60 Celsius<br> Terminal Blocks: BNC plug<br> Colour:black<br> Material:plastic<br> Package Contents:<br> 1 * ph-201 Electrode<br> 1 * ph power buffer 4.01<br> 1 * ph power buffer 6.86<br> Only the above package content, other products are not included.<br> Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.