TechNotes

I’m looking for a cleaning solution to use in our industrial ultrasonic cleaner that is similar to the old style competitor detergent. We use it occasionally for general cleaning, removal of machining oils, cleaning for high vacuum use, and to lightly etch the oxides off of copper. 

If we did a pre-mix and let it sit until use, how long would the formulations last before degrading?

Could we also use this mix for washing microfiber towels and foam sponges that have various waxes, polymer sealants and oils on them?

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Q: Why is Liquinox not recommended for automated washer use?
A: It’s all about the foam. Liquinox® Critical Cleaning Liquid Detergent is a powerful emulsifier of organic and oily residues, and contains high-foaming surfactants. 

While making a mess may come to mind, there’s more at play…

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Q: We are looking for detergent and process recommendations for manual cleaning of a 100 gallon mixer. We make one product in the mixer which contains water, modified food starch, acidic buffers, sucralose and preservative. Currently when cleaning, we boil for 1 hour at 90°C, then cool, drain and soak in cool water while using the mixing blades.  Scrub brushes and a spray hosing follows that. The mixer is made from stainless steel.

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Q: Can you tell me if Liquinox can clean/remove pharmaceutical probiotics? We use this product to clean our packaging lines. We have a customer who is looking to have us package their probiotic product.

A: Liquinox® Critical Cleaning Liquid Detergent is an excellent emulsifier of organic and oily residues. It will do the job. Best practice, however, would be to incorporate a powerful emulsifier of organic and oily residues, along with enhanced protein removal. 

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Find answers to questions such as: What is ultrasonic tank cleaning? Which industries employ? What Alconox brands are ideal for ultrasonic tank cleaning?

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Q. We use grocery store detergents to clean our labware and it recently came to my attention that we may need to switch to a laboratory grade detergent such as Alconox or Liquinox. Why is that necessary?

A. Here are some insights as to why a grocery store detergent is not suitable for use in a lab…

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Q. I am a validation manager and we use Liquinox in multiple pieces of equipment across our manufacturing site. While witnessing our cleaning, I noticed the dilution instructions are not being followed. Instead, operators are adding some squirts/pumps/pours from the bottle into a bucket with purified water. Does Liquinox have a range of effective concentration?  Do you have auto-mix ideas or other dosing solutions for customers facing this issue of accurate formulation?

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Q. What is the acceptable pH range of Liquinox for effective cleaning in an ultrasonic bath? Our solution hovers around 7 and I am concerned that’s not effective. Also, does the temperature of the ultrasonic cleaning solution affect the detergent pH?

A. A typical reading for Liquinox® Critical Cleaning Liquid Detergent at usage dilution is ~pH 8.5. A pH 7 reading on Liquinox detergent would indicate that a notable amount of fouling has occurred from use.

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Q. It appears that the Solujet is leaving a ring on some of the labware that cannot be removed. What is this ring (sodium silicate?)? How do we remove it? The labware has not been completely submerged. We have just added the Solujet soak for some labware that may have stubborn organics. We have been giving the labware a 4 hour soak in 1% Solujet, followed by warm tap water rinse then wash with Liquinox followed by 3x DI rinse.

Click for the Answer.

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Q. In reviewing the SDS for Liquinox, we noticed that it says “Should not be released into the environment. Prevent from reaching drains, sewer or waterway.” How do you recommend we rinse components if Liquinox should not reach the drain?

A. The section you mention in the SDS for Liquinox® Critical Cleaning Liquid Detergent , 6.1, refers to untreated drains (i.e. the street) and other direct-to-environment pathways. The drains from labs, manufacturing plants and the like will have septic and/or treatment processes prior to the environment. In fact, we often…

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