Involvement:Expert (understands the inner workings) - Ownership:1 day to 1 week
This type pH meter is known by me, during laboratory research I have used these meters for years.
They are as reliable as table-instruments but are much smaller and more easy to handle.
The two ponits calibration make that the zeropoint
((pH 7.00) is better than a pH 7.00 puffer and an alcaic-or acid puffer .
The puffersalts are delivered too, making pure puffers ask skilled and proper work
As all pH meters, the electrodes are very sensitive for dirt and mechanical impact.
The measutement is as precise as the quality of work and calibration.
That makes the pH meters a little difficult to handle
Storage must be done at the proper way, the meter will be damaged when not the utmoste care is taken during work and storage.
For years ago we bought these meters for abot 7 times the price, DX asks, so a real bargain.
They are able to deliver years of proper function when they are handled with the care they need.
Dispite of the price, this is NOT a toy and will ask professional skills to work with the the proper way.
They are MUCH better than the pH meters suitable only for swimmingpools.
The lab-grade precision and the price are only reached with proper handling and they are VERY sensitive for wrong handling or careless storage.
The user needs knowledgment about chemistry and proper handling.
These pH meters are not suitable to use them as a toy, they are really capable to satisfy the professionals.
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