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April 26, 2021
Image: sp bel art lab companion clear polycarbonate round style vacuum desiccator; 6 liter 42400 2021

Vacuum Gauging Desiccators

Hi Lab Guy, I need to do infiltration of plant tissues with a solution containing bacteria. The literature suggests to expose plant tissue to a low vacuum of around 80.000 Pascal/24 inches Hg. To perform this experimental step, I am looking for a desiccator. The major difficulty I have is that those desiccators come without the vacuum gauge. I have been searching for the proper gauge and how to connect it to the tubing between the desiccator and the pump and got lost. Could you please recommend: 1) The proper and reasonably priced vacuum gauge and tubing connectors that can be used effectively with F42010-0000 or F41099-0000 desiccators, to estimate the lower pressure in a range 50.000- 101.325 pascals 2) Proper connectors and vacuum tubing
October 28, 2020
Image: SP Bel-Art Lab Companion Pressure Gauge

Space Saver Desiccators Max. Applicable Vacuum

Dear Lab Guy, We are using an SP Bel-Art Space Saver Polycarbonate Vacuum Desiccator in the lab. I was wondering what the maximum applicable vacuum is? The manual said it hold 14 psi for 24 h but does it mean it is the max it can withstand?
July 19, 2020
Image: Reusable / Disposable Desiccator Cartridges in Polystyrene Slide Boxes - Ask Lab Guy - SP Scienceware

Low Humidity Storage for Microscope Slides

Hi Lab Guy, Our customer needs to seal in a desiccator, slides with samples that needs to be transported. We would like to know the best way to do this and if you have a small desiccator with a sort of "rack" for slides. Thank you for your help. - Anna C.
June 18, 2020
Image: Desi_Can_Reusable_Desiccant_Canister_SP-Scienceware_Ask-Lab-Guy

Recharging Desiccant Beads

Dear Lab Guy, After regenerating a cartridge desiccant in the oven at 300F for at least 3 hrs, where do you recommend keeping the hot cartridge until it cools down? I presume the cartridge should not be returned to the desiccator cabinet while hot. - Rea K.
May 24, 2020
Image: Desiccators – How to Choose

Achieving a 100% Humidity Free Environment: Vacuum and Gas-Purge Desiccation

Dear Lab Guy, I’m using a desiccator cabinet with plenty of desiccant, but it doesn't seem to produce a dry enough environment for my use. How can I achieve a lower relative humidity? Sincerely, George G.
April 16, 2020
Bel-Art Lab Companion cabinet style vacuum desiccator F42400-4011_12 - Ask Lab Guy

Vacuum Desiccator Takes a LONG Time

Dear Lab Guy, I have the F42400-4011 35 liter clear cabinet desiccator that I just purchased. I got it to pull the vacuum I need using an inline vacuum pump that has a free air capacity of 3.2. My dilemma is that it takes more than a minute to evacuate the chamber. Is this just pretty much the standard time or could I improve on this with a larger capacity vacuum pump? Thank you, Melissa E.