Archive | Laboratory

Removing PFOS and PFOA from Lab Glassware

Q. We need to remove perfluorooctanoic acid (PFOA) and perfluorooctyl sulfonate (PFOS) from laboratory glassware and stainless steel. Since they are inorganic residues, we’re using acidic cleaners, but are not finding them as effective as we expected. Any recommendations?
A. PFOS and PFOA are polar, anionic surfactants. They will best be cleaned by a high-emulsifying, anionic-surfactant-containing cleaner that can make mixed micelles to efficiently remove these residues from surfaces….

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Posted in Alconox, Ask Alconox, Laboratory, Manual Lab Cleaning0 Comments

Choosing Temperature for Ultrasonic Parts Cleaning

Q. How to determine appropriate temperature to clean parts with ultrasonic cleaner?

A. In general, every 10 deg C you go up in temperature doubles the cleaning speed. The faster you want to clean the hotter you should get.

There is a theoretical optimal ultrasonic cavitation temperature at around 70 deg C depending on the exact concentration of detergent. Even though in theory cavitation…

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Posted in Ask Alconox, Laboratory, Manual Lab Cleaning, Medical Device, Metalworking & Precision Manufacturing0 Comments

Removing Protein from Cell Culture Containers

Q: What do you recommend for removing protein from cell culture containers?
A. To clean cell culture containers and remove protein, use a freshly made solution of our enzymatic detergent….

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Posted in Biotechnology, Manual Lab Cleaning, Pharmaceutical, Tergazyme0 Comments

Cleaning Iron Residue in Lab Glassware (Fe+2 and Fe+3)

Q. Please provide advice on cleaning iron residues, Fe+2 and Fe+3, in lab glassware. We need to clean down to sub ppm levels.

A. The best iron salt removing detergent for manual cleaning of lab glassware is Citranox®. Citranox is a mild acid, high chelating detergent for high performance removal of…

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Posted in Citrajet, Citranox, Laboratory0 Comments

All About Rinse Aids

There are basically three kinds of rinse aids: Hydrophobic rinse aids that leave behind a residue, surfactants that wet surfaces and allow rinse water to sheet off a surface without leaving behind droplets, and acid rinses that dissolve insoluble alkaline salt residues.

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Posted in Biotechnology, Citrajet, Cosmetic, Environmental, Laboratory, Medical Device, Metalworking & Precision Manufacturing, Pharmaceutical, SolujetComments Off on All About Rinse Aids

What is an Inhibitory Residue Test?

Q. What is an inhibitory residue test? A. The inhibitory residue test is a test of suitability of glassware for microbiology testing.

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Posted in Detergents, Environmental, LaboratoryComments Off on What is an Inhibitory Residue Test?

Residue-free Glassware Cleaner for Lab Washer

Q. I am currently looking for a residue-free glassware cleaner to use in our new lab dishwasher. We would like to make sure that residue is not left behind on our glassware after washing. This is a normal portable dish washer that is typically used in the home. Could you recommend a detergent for us to use?

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Posted in Alcojet, Citrajet, LaboratoryComments Off on Residue-free Glassware Cleaner for Lab Washer

Monitoring Stability of Alconox Solution

Learn how to monitor stability of 1% Alconox Solution for proper storage.

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Posted in Alconox, Healthcare, Laboratory, Manual Lab Cleaning, Medical Device0 Comments

pipettes

Alcotabs Shoot Out Siphon Washer

Several times when we have dropped the tablets in the bottom before the basket of pipettes it has shot out the siphon whole! Any advice? It can be solved by following a procedural change….

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Posted in Alcotabs, Laboratory, Pharmaceutical0 Comments

latex tubing

Can Alconox be used to clean latex?

Can Alconox powder be used to clean latex material (tubing)? Latex is inherently a product that naturally degrades via mechanisms of hardening, embrittling and cracking. However…

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Posted in Alconox, Manual Lab Cleaning, Nuclear0 Comments