This compact, digital refractometer is designed to quickly and easily measure samples in a wide range of environments. It features automatic temperature compensation for samples and ambient temperature compensation. This allows the user to measure hot and cold samples in hot or cold environments. It features a wide measurement range that is typically not found in refractometers from 0 to 50% Brix. The water resistant construction of this instrument allows the user to wash the meter off after use and the stainless steel sensor cup helps to bring sample temperatures closer to the meter temperature. This meter is compact and easy to transport in a pocket or on a wrist strap. It features a one-touch operation technique that is often found on far more expensive meters that accomplish the same results. The Alvital Refractometer has a high resolution of 0.1% Brix and an excellent accuracy of ±0.2% Brix.
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Alvital AT-801 Suffers From Low Blood Sugar
Amazon Return, Brix MeterAlvital Digital Refractometer, AT801I bought this instrument because I wanted a refractometer with temperature compensation that would be easy to use and reliable. I had a $20 0-32 brix manual refractometer that, over time became more difficult to view through because the plastic hinged lid became opaque through many testings. This was my fault from leaving a few samples on the tray too long and etching the plastic. The Alvital claims a wider range (0-53) brix which most only go to 32 brix. It ischeaper than the Atago PAL-1 by nearly $100, yet the technical specifics are nearly identical, so, I assumed, it is possible, that the basic instruments are made by the same manufacturer and just personalized.What this instrument has shown me is that a simple manual refractometer is not only just as accurate, but that it achieves this measurement faster, simpler,and most importantly, consistent. Let me explain… Their claims that recalibration is easy and should be done each morning. (I used my $20 refractometer to verify results of the AT801). Alvital says…Just press the “Zero” button with distilled water on the measuring cup. Many times I did this and the instrument kept reading .01 or more. I usually had to wait 2 or more minutes for the room temperature D. water to register “0”. Often I had to keep pressing the “Zero” button to achieve “0”. Other times I had to re-apply the D water and keep zeroing out. This did not leave me confident that my test sample would be accurate. After days of this, I found that manually turning off the instrument would loose the recalibration.ATC or automatic temperature compensation was tooted as being able to test hot or cold samples in their environment. Well, yeah, if I left the sample sit in the well for 2 or 3 minutes. Otherwise, e.g. the sample would run like so on a urine sample…1st measure = 1.4, 1.5; wait 1 min…1.6, 1.7; wait 1 min…1.7, 1.6. So imagine my confidence. By the way, for the record, I always wash the cup with the sample 3 times before adding the sample to be tested.If I haven’t lost my window, I will be returning the digital refractometer to Amazon. Perhaps I have a defective AT-801 and Avital will contact me with a replacement unit. If so, I will be updating my comments in the future.I use a refractometer for RBTI Agricultural sampling and urine testing and base those results on suggestions of Plant fertilizer or human nutritional changes. The accuracy and quickness of my instruments is important so I think that a reliable - manual refractometer makes more sense. A higher quality refractometer for easier viewing, such as a Vee Gee, would be the way to go for now.
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