OK Time to get this done! I would like to apologize first and foremost for those who sent me their water samples from 2 weeks ago. I have yet to get them tested and I finally have today to process them. I will need to confirm if one of the sample yields the expected values so I'll be posting one result first then after the user confirms if the results look like what they expect then we can move on with all the samples.
Either way I will offer everyone who sent their water a chance to resend their samples again since the water has been sitting for 2 weeks. If you'd like to get your water tested again please PM me and send me the sample using the same procedures.
About this post:
This is a water parameter testing using a lab grade photometer from Hanna Instruments. I purchased this photometer for personal use but I do have access to at least 50 tests. I wanted more precision when it comes to reading water nutrient levels to be able to play/experiment with them. I offered free testing of water samples from other users in order to get experience using this piece of equipment and get some ideas about what parameters other people are running with.
Hannah HI3200 Benchtop Multiparameter Photometer
Photometer can measure 44 different water parameters (as long as you buy the reagents) and features result logging and a digital readout. This is the big daddy of test kits =)
The parameters to test:
N,P,K,Ca,Mg,K,Fe,Cu and Zinc. Test reagents are all from Hanna Instruments.
Hanna Sample preparation kit - came with the photometer
8 x Testing cuvettes (individually marked) - I use one cuvette for each test except for Iron/Copper and Ca/K since I don't have enough cuvettes.
N95 particle mask - for safety and used when dealing with powdered reagents
UVEX Safety Goggles - for safety
DynaPlus II Nitrile gloves - for safety
MagicFiber lint free - reusable wipes for wiping the outside of cuvettes
Kimtech Disposable lint free wipes - for wiping the inside of the cuvettes to dry them out
Germ Guardian Air purifier - for sucking out the little reagent blown from the packets and keeping our dining table clean from them
Black plastic tray - for keeping reagents powder from being blown around the table.
Disposable pipettes - used for Ca/Mg testing.
Wash bottles - contains RO water for washing cuvettes
Testing procedures followed to keep reading accurate:
All syringes and equipment for holding water samples are cleaned with RO water after switching samples.
All cuvettes are washed 3-4 times with RO water when being cleaned
All cuvettes are dryed inside using the kimtech disposable wipes
All cuvettes are pre-washed and dumped empty with sample water before filling the cuvette with the required sample volume - this allows no other liquid source to be in the cuvette to lessen contamination from RO or other water.
All cuvettes are cleaned after reading of the results - this prevents any tinting of the cuvette by the test reagents which can throw off the readings.
Each test is logged into the machine.
This device is not 100% accurate. You can check the manual here
to see the accuracy parameters for each test to give you a better idea of the +/-% when it comes to the accuracy. Also I am not a chemist nor do I work in a lab but I do try to follow the test procedures best I can to ensure accuracy of the results.
Bump: Processing Solcielo lawrencia 09/27 Water sample...
Solcielo lawrencia 09/27 Water sample test results
Something is wrong with the Ca test. I am trying to figure out how I can end up with 0 ppm Ca. Could be the new reagent kit that I got.
bsantucci tank water results (charging my phone to take pictures of readouts =)
Nitrate - 43.2 ppm
Phosphate - 14.7
K - 46 ppm
MG - 20 ppm
Ca - 10 ppm (could be bad reagent - going to test with my other photometer)
Fe - 3.47 ppm
Cu - 0.088 ppm
The Zinc test is still resulting in 0 so I'm skipping that for now.