Cleaning Scale & Spots off Depyrogenated Glass Vials

03 August 2015

Q. We see white water spots on cleaned and depyrogenated vials. Looks to be scale from the washer. Do you have a recommended cleaning agent for vial washing? I am told that use of detergents is not an industry norm. We also have baked on process fluids (oils) and would like to know if it is an industry norm to use detergents to remove such substances from glass vials used for injectable drugs. Can you provide me any literature on the subject? A. In automated washer cleaning, it is possible to get scale buildups of metal hydroxides, oxides and carbonates. To remove this scale ...

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Posted in Laboratory0 Comments

Wet Hi Pot Test for Photovoltaic Cleaning

30 July 2015

Q. We manufacture solar modules for building components. During the manufacturing process we are required to perform a "Wet Hi Pot Test." The modules are immersed in a solution and tested. The manufacturer of the test equipment said that some of his customers are using the Liquinox® detergent in a 300 to 1 ratio for the solution. Would this give us the required: 0.03 N/m surface tension 35 ohms/m resistance? Any help would be greatly appreciated.

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Posted in Liquinox, Photovoltaic0 Comments

Removing Trace Metals, Inorganics & Organics without Acid?

27 July 2015

Q. We are trying to reanalyze our cleaning procedure. Do you have a product that removes trace metals, inorganics and organics without an additional acid rinse? We sample waste water influent and effluent and collect in plastic containers. Please let me know what you would recommend. A. Organic residues are typically effectively removed by alkaline cleaning. The most robust way to remove trace metals and inorganics is to use an acid rinse. However . . .

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Posted in Alconox, Environmental, Liquinox, Manual Lab Cleaning0 Comments

Non-foaming vs. Low-foaming Detergent

23 July 2015

Q. We just purchased Alcojet® which is a low-foaming detergent. The one we used before was non-foaming detergent. What's the difference between "low" and "non?" Will Alcojet® cause a foaming problem? A. Alcojet® is designed for use in automated cleaning applications that require no foam problems. Alcojet® has an anti-foam agent that becomes effective at circa 110 deg F (45 deg C). As long as you clean at ...

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Posted in Alcojet, Pharmaceutical0 Comments

Cleaning Space Environment Simulation Chambers

20 July 2015

Q. We are currently using Alconox® for cleaning of space environment simulation chambers. What do you recommend for a process to clean steel piping contaminated with DC-704 and Fryquel 550 and turbomolecular vacuum pump backing piping at JSC/NAS? A. Alconox® detergent is the right choice, but vacuum pump grease is a very heavy difficult to remove residue. We recommend using very hot (170 deg F if possible) 2% Alconox® (20 g/L) followed by a very hot first rinse...

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Posted in Aerospace, Alconox, Biotechnology0 Comments

Assistance Developing Photovoltaic Cleaning Process

16 July 2015

Q: We are looking to hire someone to design and implement a turnkey cleaning process for our Photovoltaic manufacturing application. Do you provide this service? A: Yes. We do this type of work often. With increased governmental commitments to support renewable energy initiatives, winners and losers in solar module fabrication will be determined more quickly and by a variety of factors. One factor will be the elimination of defects to increase yields in the manufacturing process. Critical cleaning of substrates and superstrates is an essential component in achieving an optimal solar module fabrication process which reduces the cost per watt.

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Posted in Detergents, Photovoltaic0 Comments

Cleaning Animal Cages

13 July 2015

Q. I am a research tech in a new lab where we will be housing mice and rats for our studies. Since we are a small lab, I will be hand washing polycarbonate cages, wire lids, and water bottles by hand. I would like to know what type of cleaner that I can use that is safe for myself to clean with and safe for the animals. I currently have alconox in powdered form. If I can use that, I also would like to know how much I would dilute it. A. We recommend using 0.5% Detojet® solution with polycarbonate. Regular detergents like Alconox® or most other detergents and solvents are low surface tension solutions that can cause stress cracking ...

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Posted in Manual Lab Cleaning0 Comments

Cleaning Stainless Substrates in Photovoltaic Manufacturing

09 July 2015

Q: We need to clean stainless steel substrates prior to PV film deposition. What detergent should we use and in what amount and by what process? A: If the process is batch ultrasonic cleaning, use a 2% CITRANOX® solution at 60°C for 5 minutes of dwell time in the tank. This approach can also be used when cleaning copper substrates. If using a conveyorized horizontal washer where oily residues are a particular concern, use a 1% SOLUJET® solution at 60°C at line rates of 1.5 meters per minute, for a total contact time of roughly 30 seconds prior to the rinse station. Following these initial trials ...

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Posted in Photovoltaic0 Comments

Alconox at Empire State Tattoo Expo, NYC

08 July 2015

Join us in New York, New York, on July 10 -12, at the New York Hilton Midtown for the Empire State Tattoo Expo. Come visit our booth to receive our unique Alconox gifts, expert technical support for tattoo instrument cleaning and free detergent sampl

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Posted in News0 Comments

Standard Operating Procedures for Cleaning in Nanotechnology

03 July 2015

Aqueous cleaners have played a significant role in many nanotechnology fabrication processes, with different chemistry designed for different methods and materials. Matching the correct aqueous cleaner to the preferred method yields appropriate results in terms of both fabrication quality and EHS guideline compliance.

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