YINMIK pH Meter Calibration Solution Kit(4.00,7.00&10.01)

I purchased this package of 50ml x 3 PH calibration "Ready-Made" solutions @ 4.0, 7.0 & 10.04 and 2 x 10ml KCL PH probe Storage solutions that should last years as only a few drops are needed for the "glass tip sponge" to stay hydrated. The calibration solutions are sealed and can be stored at room temperature until they are opened and used for the first time - then refrigeration is recommended so they stay "fresh and accurate". The storage solutions are a MUST for any PH/ORP and other meters that have a tip that cannot dry out. This will extend the life of the probe for maximum amount of life of probe (no pre-mature failures under normal operating conditions and care in cleaning of delicate glass tip). I bought this as part of a package offered by Amazon containing the same brand Professional PH Meter, the optional Extra Probe (total 2 probes, 1 meter), the meter came with 6 packets (2 of each type) calibration crystals for 4, 7, and 10.04 calibration solutions when mixed with 220 ml of distilled water for each. This calibration/storage solution kit was offered at a discount with the Meter w/extra probe so I decided to get this kit. It is an excellent product even if you already have a PH meter because the solutions are of excellent quality and at 50ml each x 3 (calibration) and 2 x 10ml KCL probe tip storage solution - you are getting more than enough - also comes with a temperature vs PH measurement chart which shows you how at extreme temperatures, high or low, how your PH meter measurement may need to be adjusted manually to get a true measurement as temperature does affect the way a PH meter measures PH. It also contains a chart containing PH measurements for many raw foods from fruits, berries, vegetables, to meats, dairy, juices etc... both are laminated cardstock for water/stain resistance, and are very handy when using to can, preserve various foods as a supplement to taking PH measurements. Supports PH meters with 2 or 3-point calibration - and verifies operation/accuracy of either type at high acidity, high alkalinity and neutral. Chris

Recommended for providing the necessary maintenance to ensure the meter functions properly specifically its measuring capabilities and to facilitate its calibration and the care required to keep the glass bulb lubricated. It should last me a long time, as I do not use it frequently only for basic use with an RO system rather than in the intensive manner of someone working with hydroponics or similar applications. Good value for money, especially since I purchased it while it was on sale.

Very useful

Worked perfectly.

I initially thought the pH 4.00 calibration solution included with the kit was the problem because my meter was giving an incorrect reading. I purchased a brand-new pH 4.00 calibration solution separately to rule that out, but the meter still reads approximately 3.0 in a 4.00 solution, as shown in my photo. What makes this more concerning is that the meter reads the 7.00 calibration solution accurately, so the issue appears specifically related to calibration/accuracy at the lower pH range. I purchased this meter because I need reliable pH measurements when formulating skin and hair care products. A difference of approximately 1 full pH unit is significant and makes it difficult to trust readings in the acidic range. I would not recommend relying on this meter for formulations where accurate pH measurements are important.

Love the kit although expected bigger containers...

Affordable very accurate and it comes with two balls of drops to protect your pH pin

This is a good product. Has all three calibration solutions. Also solution for meter when not in use. Would buy again.

parfait indiqué dans le manuel de utilisé 12 fois au maximum. essuyer vos sondes shaker votre baton pour enlever exces de liquide et changer de solution. devrais eviter le croisemnt des solutions si tout est sec

Très bon produit pour équilibrer mon Ph et EC

Does what it should, allowed me to calibrate my PH metre, which is what I wanted.

It's useful to have it in liquid form as apposed to powder. will last longer.

Great quality kit !! Shipping was slow reason for the 4 star