£62.10 £74.52 (Inc. VAT)
999 in stock
HI-98118 GroLine Waterproof Hydroponic pH & Temperature Tester
The HI-98118 pH/temperature tester is our latest pocket meter for measuring the pH of a hydroponic nutrient solution. The ergonomic design allows this tester to fit comfortably in your hand. The large easy to read LCD display shows both pH and temperature along with calibration, stability and low battery indicators. All operations are simplified to two buttons. One is for turning the meter on/off and the other for automatic one or two point calibration.
This GroLine pocket pH Tester is an affordable way to measure the pH of hydroponic nutrient solutions. The maintaining of an optimal pH is essential to maximise optimum growth. The general rule of thumb is that as pH increases the solubility of minerals and nutrients decrease. It is important that nutrients are soluble for plants to uptake and use for growth. The pH of nutrient solution can also affect the bacteria that fix nitrogen for the plant to use. Every plant has optimum pH levels for growth. Below is a table for the ideal pH range for a variety of plants.
The HI-98118 can be used to measure the pH in soils as well as nutrient solutions. To measure the pH of soil as a slurry it is recommended to use a mixture of 1 part soil to 1 part water. The slurry is allowed to rest for 10 minutes so that the solids will settle out and the pH of liquid above can be measured.
The HI-98118 is an advanced meter while maintaining simplicity. The front of the meter has two buttons. One is for turning the meter on and off while the other is used to enter the calibration mode. There is a third button in the battery compartment that allows the user to customise the meter to their preference. Customisation includes temperature readout in °C or °F, automatic shut off selectable from 8 minutes, 60 minutes or disabled, and lastly the choice of using Hanna’s Quick Cal pH/EC standard or traditional buffers values of pH 4.01, 7.01 and 10.01.
The electrode features a unique extractable cloth junction. The reference junction of a pH electrode, also known as a salt bridge, provides an electrical pathway between the internal reference cell and the sample. Any clogging of the junction will result in a disruption of the electrical pathway. When this happens the readings will be erratic and take a very long time to stabilise. With the Hanna extractable junction a small portion of 1/8″ is extracted or pulled to expose a clean surface. With the junction renewed the clogging is cleared allowing the meter to still be used. The overall length of the junction is about 1″ so the junction should only be extracted periodically.
Built in temperature sensor for Automatic Temperature Compensated measurements
Clear, easy-to-read display
|pH Range||0.00 to 14.00 pH|
|pH Resolution||0.01pH; 0.1°C|
|pH Calibration||automatic, at one or two points using standard buffers (pH 4.01, 7.01, 10.01); one point calibration using quick calibration solution|
|Temperature Compensation||automatic from 0 to 50°C|
|Battery Type/Life||1.5V CR2032 (1) / approximately 1000 hours of continuous use|
|Environment||0 to 50°C; RH max 100%|
|Ordering Information||HI-98118 GroLine is supplied with protective cap, (3) HI-50036 Quick Cal calibration sachets (20ml), (1) cleaning solution sachet (20ml), (1) battery, instruction manual, and quality certificate|
|You will need:||HI-70300-023 GroLine Storage solution 230ml for this meter.Buy separately. Also available 500ml and 120ml.|