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  • For advice on SP lab equipment, supplies, etc.
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Important! H-B Instrument laboratory thermometers are not approved for human use.

September 28, 2020

Checking Autoclave Temperatures

Dear Lab Guy, We use total immersion mercury thermometers for checking our autoclave temperatures. Can these readings be taken right after the cycle is done, or does the thermometer need to be read at room temperature?
September 21, 2020
Image: SP Bel-Art Self-Zero Burette

Fixing a Leaking Burette

Dear Lab Guy, We purchased a few of your 10 mL self-zeroing burettes. We are having a problem with leaking out of the bottom of the glass stopcock. The little rubber O-ring seems to not be doing anything or maybe wasn't designed to keep it from leaking. Do you have any recommendations on how to fix it? We run 0.1N sodium hydroxide through it.
August 2, 2020
Image: 50000-0002 - Bel-Art Small Molded Polyethylene Benchtop Fume Hood with acrylic sash

Matching an Exhaust Fan to a Fume Hood

Dear Lab Guy, For your part# H50000-0002 just wondering if you had a fan/blower or extraction system to go along with the fume hood. Client does not have an ability to plug this unit into an existing system. - Glen G.
July 31, 2020
Image: I have been trying to homogenize heart tissue in the Bel-Art Mini Liquid Nitrogen Cooled Mini-Mortar set

Homogenizing Frozen Samples Efficiently

Dear Lab Guy, I have been trying to homogenize heart tissue in the Bel-Art Mini Liquid Nitrogen Cooled Mini-Mortar set (H37260-0100) The pestle did not reach the bottom of the tube and the tissue got stuck at the bottom, so I did not achieve the desired result. I used regular 1.5ml Eppendorf tubes. Could you please advise me on what can be done about it? Thanks. - Olga M.
July 31, 2020
Image: GHS Wash Bottles - Ask Lab Guy

Cleaning Wash Bottles

Dear Lab Guy, What's the cleaning process for the wash bottles CAT. NO. 800100799? -Abdul S.