LotFancy 40Gram Indicating Silica Gel Desiccant Canisters - 4 Pack

Captain Sparrow: Worked well, the only downside is that window is not clear enough to check the status of silica beads.

United States on Aug 28, 2023

John Kustra: Keeps my stuff dry

United States on Aug 11, 2023

Redfisher: I’ll throw one of these into an ammo can to remove any moisture. They definitely work! I had one keep turning green and it turned out I had a bad seal on one of my cans!

United States on Jul 20, 2023

Frozen Northlander: I don't know why so many strange reviews about difficulty of use, poor product, not effective, etc.
I am a retired Chemical Engineer with lots of experience with desiccants. Sodium silicate is the absolute easiest and safest desiccant to use. A little knowledge of high school chemistry will tell you this (if you bothered with science).
The product was well packaged and ready for use (dry). A bit of light when looking through the window at the desiccant will show you the color; without external lighting, the color is very difficult to discern through the very small window.
The desiccant can be regenerated at a relatively low temperature (250-275F or so). Testing this by adding liquid water and then heating to evaluate the regeneration can result in unfortunate and/or dangerous results, particularly at temperatures in excess of the recommended maximum.
If you don't understand simple high school chemistry or physics (or common sense), don't use anhydrous sodium silicate. THINK!

United States on Sep 11, 2021

D NelsonD Nelson: Open the package. There’s a very dirty plastic disc in the center which makes it very hard to see the color. Shoving it straight down as shown in the pictures with a pencil works to both remove the disc and the top and lower half.

To test the color change (all were plastic wrapped twice, once individually and once again as a set) I took 3 beads and placed it in a Pyrex cup and dripped a few mL of water from the sink. As soon as they turned green they exploded into tiny pieces.

This would make for an extremely dangerous choking hazard if swallowed by pets or kids as the tiny and sharp pieces can really leave behind a lot of damage.

Unfortunately it’s a bit tricky to stick the plastic disc back as it’s quite rigid. Will resort to a piece of tape for now. There seems to be no other way for the beads to fall out aside from the center viewing hole with the plastic disc removed and the two halves falling apart. Will tape the sides just in case but the metal seems hold it ok for now

United States on Jun 09, 2021