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BAOSHISHAN Zahn Cup - Unlock More Unknown Liquid Viscosity
This is a Zahn Type Cup Viscometer which are used to measure the flow behavior of liquids such as paints and is in very nice condition. Applicable to the construction site to quickly measure the viscosity of the paint to be sprayed; more widely used in electronic products, plastic coatings industry.
- Fast determination of fluid viscosity such as ink, paint and dye.
- Cup 1# ~ 5 # available for different materials
- Mainly applied to maintain the stability of the viscosity of the product in the process of use, so that the viscosity is always maintained at the set range to protect the color of the product effect.
Clear Nameplate
Laser marking of nameplates of various models is convenient for different use.
Outflow Hole
Precision drilling can ensure the accuracy of outflow, is not easy to grind.
Balance Ring Buckle
Ensure that the cup body remains vertical during use, easy to operate, fast and accurate measurement.
Zahn Cup Operation Method & Maintenance
1. Clean before Testing
Choose the appropriate cup size before testing, so that the time of outflow can be controlled between 20 and 80 seconds. Wipe it clean with the appropriate solvent and dry it before using.
2. Liquid Temperature Control
Adjust the temperature of the filtered sample and the outlet cup to 25℃ or a specific temperature, keep the temperature constant, and immerse the cup in the container for 1-5 minutes to achieve a thermal balance.
3. Test and Time
Lift the cup vertically from the sample, and the movement needs to be fast and steady. Start the timer when the the upper end of the cup leaves the liquid level and. Keep the cup vertical when the liquid flows out and the distance from the liquid surface should not exceed 150mm.
4. Viscosity Value Conversion
Stop timing when the first breakpoint occurs. Repeat the test 2-3 times. Take the average time to reduce the error and the difference between the two measurements should be less than 5% of the average. Then use the formula v=k (t-c) to convert the viscosity value. Clean the cup after testing.
Application
Zahn Cup can be used to quickly determine the viscosity of printing ink, dyes, coatings, experimental solvents, leather paint, oil, grease, food and other mobile liquids in the printing industry such as paint, varnish, wet enamel, gravure, relief, lithography, flexography, silk plate, etc.
Zahn Cup is often used as a fast viscosity measuring tool in workshops and at the spot.
MamaKirk
Reviewed in the United States on August 27, 2023
I use this when I spray my crafts, No more guessing on wether the liquid will spray in my LPHV gun.
M.
Reviewed in the United States on June 30, 2023
It's really a nicely made cup, and the inaccuracy isn't BAOSHISHAN 's fault, it's inherent to the nature of Zahn cups in general.It's a really imprecise way to measure viscosity, but coatings manufacturers continue to spec using Zahn cups, so until they come into the 21st century there's not much we can do about it.This cup is pretty nice, and after a couple of pulls to get back in the habit, I can get a set of readings that repeat within about 15%. Which is about as good as I've ever done.It does read about 20-30% higher than another cup I have here, but that doesn't surprise me at all given what the old cup has been through. These numbers are probably better.Although I've had numbers jump around by 30% or more when using different brand cups in the past, so I just consider the Zahn readings to be one of several data points to consider in determining if a coating is appropriately thinned. I mostly use the readings as a starting data point, and then to help maintain consistency through batches. (As long as one considers +/- 10-15% to be consistent :-). )Enough bellyaching, back to this review - good product at a fair price!
Wolfgang Tenbrock
Reviewed in Germany on February 18, 2023
The product is well packaged and very easy to operate
Freebeer
Reviewed in the United Kingdom on May 24, 2022
I bought this as a bit of a Layman as I wanted to measure the viscosity of my liquid. I researched and determined that the Cup1 was appropriate for my liquid type. The item is as described, it was packaged well and easy enough to use. Where I struggled (hence 4 star and not 5) is that I found the formula difficult to work out so I had to research a bit online. For the record, my time of liquid outflow was 28 seconds - so K of 1.1 x (29-28) resulted in a negative number. This as I found out was not a possible outcome so I deduced that the nearest outcome was cSt 1 - akin to water. I thought that was the case before I tested and now I know...it just took me, a simpleton, a long time to figure out.
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