Hello,
There have been several discussions and each time you see a test results that is not consistant with what you expect, you should have your tests results validated...
This is done several ways... the common method would be to have someone else, using a different test kit, test your water to see if the results match...If they dont match, you should get a third comparison done and then average the results to see the difference between the average and what you tested... and use that as an 'adjustment'
The other method is to buy calibration solutions... then test the calibration solution to see if the results are what the solution is rated at...
They do sell several test calibration solutions for different tests, but not for all..
they sell a pH solution... which is actually two ssolutions... 7.0ph and 10.0 ph
It is best to use calibration solutions in the similar range as to what you are testing for... it really wont make much sense to test a solution tha has a pH of 4, when our pH should be in the range of 7.5-8.3
so, the electronic probes should be calibrated with both 7 and 10
they also sell solution to calibrate/test photometer, and hydrometers.... the solution you should look for is 53ms
They also sell a solution for TDS meters to measure your filitered water, (RO/DI)
You can get them in any range, and currently i have some packets for anyone who wants... they can just place the probe into the solution and see what thier meter reads, and hopefully it is close...
If anyone wants a packet for thier TDS mter, please let me know, and PM me your address, and i will shove a packet into an envelope and send it out...
