Archive | Manual Lab Cleaning

Water Spots on Stainless? Improve Blowing Process

Q. White spots appear on our stainless steel parts the day after cleaning with Alconox. Right after we clean them, they are dry and visually clean. So, is this next-day residue from the Alconox detergent? If not, can you tell us why this is happening? A. It is fairly unlikely that visually clean parts have Alconox residues suddenly appearing the next day.  In addition to Alconox being free rinsing, any residue that did not get rinsed for whatever reason, would be visible fairly immediately.

Most people in similar situations, even though the parts appear “dry and visually clean,” find that the spots are from water.

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Posted in Alconox, Biotechnology, Foodservice, Healthcare, Laboratory, Manual Lab Cleaning, Medical Device, Metalworking & Precision Manufacturing, Pharmaceutical0 Comments

How Does Tergazyme Enzyme Detergent Work?

Q:  You recently sent a sample of Tergazyme detergent for a tough cleaning challenge and it worked better than anything we had previously tried. I realize this must be due to the enzyme component. What information can you provide me on how enzyme detergents work, so I can share it with our decision makers / executives who want to better understand why this detergent got such different results?

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Posted in Biotechnology, Foodservice, Healthcare, Laboratory, Manual Lab Cleaning, Medical Device, Pharmaceutical, Tattoo, Tergazyme0 Comments

Lab Test Tubes

Minimum Detergent Concentration?

My question is related to a minimum detergent concentration.  We manually wash labware of all sizes in 0.3% Liquinox solution. We also pre-wash or pre-rinse the labware and control our parts load.  We rarely have failures. We want to change our protocol to extend the wash water use for one day instead of based on a numerical parts load.  Do you think a 0.3% Liquinox concentration is sufficient detergent capacity to go an entire day?

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Posted in Laboratory, Liquinox, Manual Lab Cleaning0 Comments

Cleaning Proteins, RNA and DNA from Lab Equipment

Q. How can I clean proteins, RNA, and DNA from laboratory equipment?

A. Thank you for your question concerning cleaning proteins, RNA and DNA from laboratory equipment.

We will address each separately . . .

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Posted in Alconox, Citrajet, Citranox, Detojet, Laboratory, Manual Lab Cleaning, Tergazyme0 Comments

Cold Cleaning

Q: We are a large biotech and in an effort to go green with our cleaning, we are exploring cold cleaning (cleaning with cold water) using your detergents. A: Cold cleaning is a very reasonable approach for energy conservation, and in short, its effectiveness depends on the details of the application.

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Posted in Biotechnology, Cosmetic, Laboratory, Manual Lab Cleaning, Medical Device, Metalworking & Precision Manufacturing, Pharmaceutical0 Comments

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

Alconox Liquinox

Differences between Alconox and Liquinox

Q. Currently using Alconox, but are considering a switch to liquinox. We have seen less residuals with Liquinox, which is desireable. What are the recommendations and concerns with switching from Alconox to Liquinox? What are the difference in ingredients between the two?
A. Alconox and Liquinox are functionally equivalent cleaners, but are not chemically identical. Click to learn more and access the Liquinox and Alconox msds.

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Posted in Alconox, Ask Alconox, Laboratory, Liquinox, Manual Lab Cleaning, Medical Device, Pharmaceutical, Validation0 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