So far so good. I've had it 3 weeks and have used it on 4 different occasions.
First off let me address the dry packets and de ionized water- I used De stilled water to mix the packets. There is a difference in water(s) however the packets seemed to be right on the mark with De stilled (no minerals added) water. The Unit is within .01 accuracy when calibrating, if not dead on. What I mean is that 2 of the 3 packets were exactly what the packet stated it should be. Now it could be the difference of me mixing the packets of being above the line or below the line on measurement of needed added water.
I used 3 sanitized (new) Ball jars, created the mix, drew off the jars into new zip locks as not to contaminate the original mix. Used Zip locks to calibrate on all 4 different occasions of use. All go in the fridge when not in use. I figure the zip lock draw should be good for about 10 calibrations before needing to pull off the sealed up jars to repeat.
My situation was first buying a competitor with Dr on it too (with a monkey on it) they are the same meter except they use different style batteries. I returned that one due to the seller sent me Hanna sachets that are 7.01 and 4.01 to calibrate a unit the unit wants 6.86 and 4.00, creating a false calibration and bad read from those wrong calibration sachets. Which prompted me by another meter before this one that was at the top end of my price range and only was accurate to .1 accuracy. That meter started to act up on the second calibration with Err1 and was supposed to give an Err2 to remedy but never did, sent it back.
I am brewing and vintner so that .09 points matters to me (in either direction). Hydroponic prob not a big deal. But for the cost of this meter, being the better price and better accuracy I recommend it.
I also recommend you buy storage solution for your probe tip. Just a splash in the tip cover till you are ready to use it. The tip is as sensitive as your eye, so bear in mind when rinsing and dabbing dry.
Let me address C.S. no phone, no biggie, Facebook chat and they were right on a question I had about accuracy of meter and not just the display. Both are .01. Your tip should come wet and a good idea to soak it in storage solution for 24 hours before calibration. Never got an answer about using an add on warranty so if you cannot get an answer before giving money you gotta wonder after they have your money. This one came with a card (unknown if it is temporary promo) but register it and double the warranty. Yes please!
| Manufacturer | Dr.meter |
|---|---|
| Part Number | PH100-V |
| Item Weight | 8 ounces |
| Product Dimensions | 7.8 x 2.9 x 1.9 inches |
| Item model number | PH100-V |
| Is Discontinued By Manufacturer | No |
| Color | Ph100 Ph Meter |
| Style | PH100 |
| Material | ABS |
| Power Source | Battery Powered |
| Item Package Quantity | 1 |
| Measurement System | Metric |
| Display Style | Digital |
| Included Components | - 1 x pH Meter - 1 x Carrying case - 6 x Calibration packet - 1 x User manual - 1 x Warranty card - 4 x button cell - 1 x Warranty card |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Zinc |
