Water Activity Meter Smart Food Water Activity Tester for Jerky Dried Fruit Grain Vegetable Aw Moisture Mete Tools Adopt Non conductive Humidity Sensor, 0-1.0AW ±0.02AW Water Activity Analyzer Monitor

I have to say that this water activity meter is truly outstanding. Its accuracy is outstanding. It consistently provides precise results when measuring the water activity of a wide range of samples. This is crucial in many fields such as food science, pharmaceuticals, and cosmetics. Its ease of use is a big plus. The interface is intuitive and user-friendly. Even those who are not very tech-savvy can quickly learn how to operate it. Moreover, its design is very compact and portable. It does not take up much space on the bench and can be easily moved if needed. This portability makes it suitable for on-site measurements in different locations.

The media could not be loaded. This thing is a lifesaver. I used to just guess if my jerky was dry enough but now I know for sure. Super easy to use and very reliable. The readings are quick, and I can tell it's accurate because my food stays fresh longer. It’s lightweight and easy to carry around which is great when I'm working with different batches of food. The battery lasts a long time too, so I don’t have to worry about constantly recharging it. Would be nice if it came with better instructions, but once you get the hang of it no issues at all! Definitely recommend for anyone who dehydrates food regularly. It's just amazing value for a money spend.

This measures the water activity in your food to determine if the amount of water is high enough for bacteria to grow which will cause your food to spoil. If you dehydrate or freeze dry foods, this is a great way to confirm if the food is dry enough for packaging for long term storage. If you are a chef, this device is also important for food quality as water activity is linked to texture related aspects of food, such as clumping, crunchiness, chewiness, etc.I think one reviewer posted on the wrong product because this is not a pH meter and doesn't have any contact probe. Food is put in included petri dishes, the aluminum base is split in half and the dish is put inside and then sealed. The meter has no contact with the food at any point. It basically senses the humidity the food gives off, which indicates the amount of free unbound water molecules in the food, which could be used by microorganisms. Note that water activity is not the same as water moisture level. This is why if you use a cheaper water meter such as what is used on measuring water content in 2x4 wood pieces, you won't have success in detecting food safety levels like you would with this device.In theory you don't need this meter as you can calculate water activity, however this requires accurate knowledge of your food's contents. If you are buying this to confirm commercial food safety (which has nutritional facts with the percentages of protein/carb/etc) then calculation is possible, but it is still much slower than this meter which provides a reading in 5 min. Most people just trust the safety of commercial food. This really is for home preserved food. While one could add up nutritional content of the ingredients to make the calculation, there is a very large margin for error compared to using this device.A lot of people have issues with similar water activity meters but I believe it is just user error. An important factor for accuracy is ensuring the air around the meter is consistent in humidity and temperature. This could be the reason some people report drifting measurements months later (because the seasons change). The device does have a thermometer which can help identify any temperature irregularities. The device does have a calibration adjustment, although it is much simpler to just record the difference and add that to whatever reading you get, as this will be easier to keep track of drifting measurements from environmental changes. The first reading you should do is with deionized/distilled (pure) water, which should have an aw of 1. Note that any reading above 0.8 or below 0.3 requires waiting an additional 20min, by which point the reading should be 0.95 or higher, which requires waiting an additional hour (note the auto shutoff will engage after 20min, but turning it back on continues the meter, it won't restart from the base reading). This only really needs to be done once to confirm the accuracy of the meter, because in practice any reading above 0.6 is concerning for food safety (defined as the Aw where osmophilic yeasts grow in optimal conditions), and any reading less than 0.3 is irrelevant because the food is very dry and safe at that point without any concern for spoilage. So in practice readings will only take the 5 minutes to perform, and it beeps every 5 min to help remind you a reading is done.This doesn't have the level of accuracy of meters used industrially which have 4 digits or more, but this meter also doesn't cost several thousand dollars either. For home use, this is more than accurate enough to determine food safety. In my water calibration I got 0.91aw repeatedly, so I just know to add 0.09 to any values I get. The stated precision of +/-0.01aw is correct (this can easily be confirmed by the user retesting the same sample repeatedly) and ultimately precision matters more than accuracy when comes to a device like this, as water activity is essentially a constant magnitude, assuming one doesn't heat or wet the sample in-between readings.I was not able to get bluetooth to work and USB connection seems to require a special 2.5mm TRS jack which was not included. However, computer connectivity really isn't relevant since the reading is only three digits and this is easy to type if one is recording data for some kind of experiment.

This product seemed great at first and was very easy to use. Sadly, mine is no longer working and I've used it less than 5 months. It won't turn on anymore. At first, I thought maybe the replaceable batteries died, but I replaced with fresh batteries and it's still not working. This is a huge hit for me as this machine was over $400. Very disappointed.Edit: After leaving my initial negative review, the company contacted me via WhatsApp and asked for pictures and videos of the broken instrument. They then sent a replacement and it has been working fine so far. They were very easy to work with via the WhatsApp and I truly appreciate them replacing the broken one.

Very good, it met my expectations. It’s accurate and does a good job of providing details for moisture. I've had issues with dampness in the past. So this fantastic tool deserves all 5 stars!And, big plus is the large display makes readings clear easy to read.

A simple in use tool. Really useful with big household and all the products I like to keep in my pantry. I did verify quality of rice and Buckle as too favorite foods the big family uses. A single start button. Everything else works just by inserting small amount of product in plastic container.Tool is expensive, but totally worth it! Accuracy and Precision for Measurements of the product I like.Absolutely Recommend It!