Archive | Detergents

Passivate: Citric Acid Option with Citranox and Citrajet Detergents

Surface contamination interferes with formation of protective oxide coating on stainless steel thereby leaving it open to corrosion. The stainless steel needs passivation.

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Posted in Citrajet, Citranox, Medical Device0 Comments

Flux Residue Removal

Q. I am seeing a white powder around solder joints on PCBs.  Is this solder flux? We use Detergent 8 for cleaning. Do you know why this is happening and how to stop or remove it?
A. There are several ways of approaching this common issue of solder flux and its removal. For example, One way to fix this problem is to lower the temperature when soldering. In another scenario, a leading aerospace manufacturer studied putting potassium silicate (10 mL in 10 L) into the Detergent 8 bath to act as an inhibitor to stop the formation of these white salts.

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Posted in Citrajet, Citranox, Detergent 8, Electronic0 Comments

Clean-in-place (CIP) with Citrajet Detergent

Q. Our pharmaceutical company is transferring product manufacture to a different one our facilities. We used a CIP cleaning process with Citrajet and are going to have to perform validation and verification tests again. What information do we need for our testing? Chemical properties might be helpful as well as the science on how this chemical works. We would also need information on disposal and the requirements for allowing this to flow to normal process drains.

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Posted in Citrajet, Keylajet, Pharmaceutical, Solujet, Validation0 Comments

Is Liquinox Drain Safe?

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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Posted in Liquinox0 Comments

Cleaning Carbon Deposit Swirls On Alumina Parts

Q. Our parts, made of 99.5% alumina, have carbon deposits that show up after our brazing process. We do not use a flux for our ceramic parts; we high-temp fire a moly/manganese painted paste onto the ceramic. The part is then sent out for nickel plating to prevent corrosion of the moly manganese metallization areas. The next step is our brazing.

We are not seeing any spots on the parts before brazing, but as we continue through 5 brazing cycles and braze in a hydrogen/Nitrogen furnace with the cusil braze rings, we see black spots forming that show up as high-carbon deposits with the SEM data…

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Posted in Citranox, Metalworking & Precision Manufacturing0 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

Removing Polychlorinated Biphenyls (PCBs)

Is Alconox and/or Liquinox an effective detergent for rinsing and removing polychlorinated biphenyls (PCBs) from non-porous surfaces (such as excavation equipment)? We have a great deal of experience with remediating PCBs with both powdered and liquid concentrate detergent options.

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Posted in Alconox, Environmental, Liquinox0 Comments

hard water

Citrajet and Hard Water

I work in a lab here in London, and we are washing lab glassware (molecular biology/bacteria) with a standard home dishwasher. We do not have access to distilled water for rinsing, and our water is very hard. Will Citrajet be okay under those conditions? Also, do you have a distributor for Citrajet in the UK?

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Posted in Alcojet, Citrajet, Laboratory0 Comments

Cosmetics Cleaning: Removing Erythrosine

Do you have a known solution for removing erythrosine from stainless steel? Erythrosine is also known as Red 3 when used as a cosmetic. Sometimes the cleaning is manual, other times it is automated.

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Posted in Citrajet, Citranox, Cosmetic0 Comments