Archive | Laboratory

Cleaning Cell Culture Tubes

I am using reusable cell culture tubes for boiling urine samples at 121°C with 8M NaOH solution. After this application, there is a white stain inside, which I can’t scrub off. I used Alconox at the concentration on the container: 3-5 Tbsp/gal. I’ve soaked them, scrubbed them, and then also sonicated in a cold Alconox solution for 30 min….

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Posted in Citranox, Laboratory, Manual Lab Cleaning, Tergazyme0 Comments

Automated Labware Washer Detergent

Q. Liquinox foams too much to use in the labware washer. We test for phosphate, so we need a phosphate free detergent. We need a cleaner that will clean off any testing residual on glass and plastic without leaving any interference.
A. Detergent choice for cleaning labware in an automated laboratory washer depends upon whether you use powered or liquid detergent. Click for details. For powdered detergent, use Tergajet phosphate-free low foaming powdered detergent, catalog number 2204 for the 4 lb box size. For a liquid detergent, use Solujet phosphate free low foaming liquid detergent, catalog number 2101 for the 1 gallon size.

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Posted in Laboratory, Solujet, Tergajet0 Comments

Detergents for Laboratory Glassware Washer

Q. What detergents and recommended dosing should I use in my labware washer? A. For use in a typical small, under counter laboratory glassware washer…

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Posted in Alcojet, Citrajet, Laboratory, Solujet0 Comments

Cleaning Glass Between Salt Tests

Q. What do you recommend for cleaning glass equipment between salt tests? We are removing inorganic salt residue. A. There are many kinds of salt tests, such as corrosion, resistance, conductivity or solubility. When removing inorganic salt residue from a glass substrate, such as sodium chloride, calcium chloride, calcium carbonate or magnesium carbonate, we recommend…

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Posted in Ask Alconox, Citrajet, Citranox, Laboratory0 Comments

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

Making detergent solution (1%) by weight or volume

Making detergent solution (1%) of powdered detergent such as Alconox or Tergazyme, you can make your solutions by weight or by volume.

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Posted in Alconox, Citranox, Laboratory, Liquinox, Manual Lab Cleaning, Tergazyme0 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