Bluelab Metcom Combo Meter For Ph, Temperature, Conductivity (Nutrient) In Water With Easy Calibration, Digital Tds R For Hydroponic System And Indoor Plant Grow, Pack Of 1

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The BlueLab METCOM is a nearly perfect instrument (at least in the short term). It does what it's expected to, within it's limitations. BlueLab doesn't claim it to be any more or less than it delivers. PH seems very accurate. I calibrate often and it never seems to need it, despite the fact the probes are in a nutrient tank 24/7 (I do give the probe a day a week or so in Kcl solution to hopefully keep it healthy). The TDS meter is fine for it's intended use - nutrient solution maintenance, but isn't precise enough to gauge the quality of raw/RO/DI water, you'll want a cheap pen for that, I use a Membrane Solutions TDS pen and it seems quite accurate down in the sub teen TDS levels (less than 20 bucks and comes with a nice magnetic case). The Thermometer is slow to respond (built into the TDS probe and has high mass) and ok as a very rough idea, but mine is about 3 degrees F high and it only reads full degrees (no tenths). Here my goto is the VEE GEE Scientific 83110 which is a great thermometer (see my review on that). The BlueLab thermometer is plenty accurate and repeatable to tell if you have a chiller problem or such. I don't like not having a comparison/backup for everything, so I just ordered a "2 in 1 Temperature pH Monitor" (Amazon of course) for about forty bucks (20 less than a probe from BlueLab), review in a month or so. (it's 7/21) This unit lets you check in on your Hydro system anytime you wish with the press of a button per reading, 3 hits and I've got PH, TDS and Temp, and I know it's all OK or if I need to look into a problem. No rinsing, opening tanks, checking calibration or any of that pen stuff, and zero risk you'll drop the pen in. The whole PH pen thing is just a PIA and discourages frequent checks. The pens are less precise in general unless you spend almost as much as you will for this handy device, and the probes are often not replaceable. Ph probes by design have a limited life. Always keep litmus paper or a dropper kit on hand, JIC. BlueLab products are moderately priced, very reliable and fairly accurate (but highly repeatable). That fits the needs of a lot of users. If you are a fit, this is a great solution, I am, and I will be using BlueLab instruments in the future.

Like this machine and it's functionality, works very well and easy to use. Could use some more design thought. The pen when not in use need to remain submerged in the storage solution. To do this Bluelabs has a very small "pill bottle" type container at the tip of the PH pen. The container is held in place by friction and a rubber washer. It's a little awkward to remove, but even worse once removed can be easily tipped over or misplaced. The washer itself is just waiting to be dropped and roll away! Also I do with the EC part of this was also removable like the PH pen is. The cabling of both the EC and PH pens are cumbersome when both are connected to the machine. As I mostly use the PH pen I wish I could disconnect the other pen and store it away for when needed.

Me gusta porque me da confianza en sus mediciones, precisas y practicamente al instante. Dandote mucha tranquilidad saber que es el resultado es preciso. facil de calibrar y con un buen acabado y facil de usarsolo tienes que pulsar al botom de lo que se quiera medir ya sea la conductividad y tenperatura en la misma sonda. el ph se mide con otra sonda especidfica. muy buena compra, Ahorras mucho tiempo en calibrar la solucion de nutrientes para tus plantas, control absoluto. Un saludo

Good product. Better then the ph pens. There’s a limited amount of tests a ph tester can perform as they leach a liquid from inside. The pens reserve of test fluid is much smaller then the ph tester on this model. The ph probes are fragile and if you ever break one (which you probably will) the replacements are only 70$ for this model vs $120 for a ph pen. More upfront but also more features that plants care about such as water temp (not to cold, not to hot or your plants go into shock) and saturated nutrients measured in EC and ppm in both the 500/700 scale. You can also pick up a quality storage case by bluelab for only $40 to help protect your investment. Trust me after breaking my last ph pen from a clumsy drop you will want both a replaceable ph style probe type meter and the storage case to go along w/ it. Blue lab is the only water testing product that any good hydro store will recommend. You get what you pay for and if your doing hydro or organic growing an accurate ph is the difference between lifeless unproductive plants vs vigorous high yielding guerillas. Don’t forget to acquire some ph test storage solution as this is not included. Don’t bother getting any calibration fluid. Your local hydro store most likely will perform this for you at no cost. Be sure to calibrate at least every month/two months for accuracy.