Cleaning Solar Panels with Minimal Water
Q. How to clean installed solar panels using minimum amounts of water.
A. For field cleaning of solar modules I recommend using Liquinox detergent. This is a concentrate that would be used at a 1% solution (1.25 oz/gal, or 10 mL/L). Liquinox is not harmful to discharge onto the ground in an agricultural setting.
Swab limit for cleaning validation
Q. How do you calculate the swab limit, once it has been extracted in solution?
A. In general the swab limit for cleaning validations calculations go as follows:
Cleaner for Solar Wash System
Q. We are working on a new system designed to clean large solar arrays. We would like to develop a cleaner for our particular use in our solar wash system that produces an easy to maintain surface to keep module output at a maximum.
A. Installed solar arrays and panels operate at peak efficiency when they are clean. Dirt, grime, bird droppings and dust can degrade the performance of solar panels. To remove residues, use a 0.5 – 1% solution of Liquinox neutral range detergent (5 -10 ml/L or 0.65 – 1.25 oz/gallon).
3D Printed Resin Cleaning
Q: We are using isopropyl alcohol to remove residual 3D printed acrylic resin on plastic parts. It works ok, but we are looking to avoid flammability. What can Alconox recommend?
A: Detergent 8® Low-Foaming Ion-Free Detergent is in general the best cleaner we have for removing assorted resins. In some cases….
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….