No hay artículos en el carro
No hay artículos en el carroExtech RF20 Automatic Temperature Compensation Salinity Refractometer
Robert S. Balaban
Comentado en los Estados Unidos el 24 de marzo de 2024
well made and clear optics gave accurate values
Jacques Gagne
Comentado en Canadá el 26 de octubre de 2018
bon
Adrienne white
Comentado en los Estados Unidos el 4 de agosto de 2015
Nice but kinda hard to read
John Quincy Adams
Comentado en los Estados Unidos el 7 de julio de 2012
I searched and searched looking for upscale instrument and thought this would fit the bill. I thought I was buying an very good quality refractometer judging by the reviews. I did not even bother to try it as it is no better than one for half the price. The package insert says nothing about were it is made, what firm made it, address, email, contact, anything. Save your money. You get the impression you are getting a higher quality instrument, but this is just a chintzy product with a case, like you would get buying a tool at Harbor Freight. Arrive poorly packaged for mailing too. Way over priced. Returning.UPDATE: As I suspected: This is a Chinese knock-off. Below is the link to what you will get. It is NOT an Extech instrument. I have not heard from the seller. This hacks me off. Will ask Amazon for immediate refund.[...]
Pedro M Villarroel
Comentado en los Estados Unidos el 24 de junio de 2010
I'm using this unit to measure the salinity in my fish tank and for the first time I really know the real value of this important parameter. At first I was using a regular plastic hydrometer and was trusting the results I was getting, but then I bought a second hydrometer and the readings were totally different from the first one. That's when I realized that I needed more precision, and this unit is of course more expensive, but the accuracy you get is worth the extra money. It turned out that the salinity in my tank was way too high and was the reason for several problems I was having with the aquarium. The unit it's extremely easy to calibrate , all you need is destilled water and 10 seconds of your time, and is also very easy to use.
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