The cleaning of the flat corrosion testing pool is a key step in ensuring the accuracy and reproducibility of experimental data. If not cleaned properly, residual corrosive media, products, or pollutants can seriously affect subsequent experiments. The following are detailed cleaning precautions and standard procedures:

core principle

1. Full cleaning:Ensure that all surfaces (pool body, lid, sealing ring, electrode holes) are cleaned thoroughly.

2. Avoid cross contaminationPrevent mutual interference between different experimental media.

3. Protective componentsAvoid using cleaning methods that may damage the pool material or seals.

4. timelinessClean as soon as possible after the experiment to prevent corrosion products from drying up or medium crystallization.

Detailed cleaning steps and precautions

1. Preliminary treatment after the experiment

• safetyWear appropriate personal protective equipment (gloves, goggles, lab coats, etc.) based on the electrolyte used (such as acidic, alkaline, chlorine containing, sulfide containing, etc.).

• waste liquid treatmentTest the corrosive medium in the testing poolPour into the designated waste liquid recycling containerDo not pour directly into the sewer.

• disassembleCarefully remove all internal components such as the sample, auxiliary electrode, and reference electrode. Remove the detachable components such as sealing rings and gaskets together.

2. Main cleaning process

Step 1: Physical flushing

• Using a large amountDeionized water (DI Water) or ultrapure waterConduct preliminary and thorough flushing inside and outside the pool to remove most of the residual solution and loose corrosion products.

• For stubborn solid products such as rust and scale, soft ones can be usedNon abrasive toolsGently scrape off (such as plastic brush, sponge, cotton swab),Do not use metal brushes or hard scrapersTo avoid scratching the pool body (especially the transparent observation window).

Step 2: Chemical Cleaning

• Regarding general residuesSoak and scrub with a mild detergent solution (such as laboratory grade neutral detergent or diluted dishwashing liquid).

• Targeting specific pollutants：

• Organic residues/oil stains: AvailableAcetone, ethanol, isopropanolWait for the organic solvent to wipe, but confirm that the pool material (such as PMMA/acrylic, glass, PTFE) is resistant to the solvent.Quick wiping to avoid prolonged soaking.

• Inorganic salt crystallization/alkaline residue: AvailableDilute acid solution (such as 5% dilute nitric acid or dilute acetic acid)Soak and clean.Attention: For stainless steel tanks, use hydrochloric acid with caution to prevent pitting corrosion caused by chloride ions.

• Acidic residues/oxidizing substances: AvailableDilute sodium bicarbonate solutionClean after neutralization.

• soakFor situations with complex structures or severe pollution, the tank can be soaked in cleaning solution for several hours.

Step 3: Rinse

• This isThe most crucial step. UseDeionized water or ultrapure waterRepeatedly rinse the tank body and all components at least 3-5 times to ensure that all cleaning agents and chemical residues are removed.

• Use the "fill shake pour" method to ensure that every corner is rinsed thoroughly.

Step 4: Drying and Inspection

• air-dryingInvert the cleaned pool body or place it in a clean, dust-free, ventilated area to air dry naturally.It is recommended to use dust-free cotton cloth or laboratory paper towels to gently absorb external moisture and allow the interior to evaporate naturally as much as possible.

• Auxiliary dryingFor gaps that are not easy to dry, you can use an ear wash ball to blow air or use a low hot air blower (cold air mode) to assist.

• avoidDo not use regular paper towels or cloths to wipe the inner walls to avoid introducing fibers and dust.

• checkCheck whether a uniform water film (no water droplets, no stripes) is formed on the inner wall of the pool under illumination. If there are water droplets or stripes, it indicates that there are still hydrophobic pollutants and they need to be cleaned again.

3. Component cleaning

• Sealing ring/gasketClean separately with deionized water and mild detergent. Check for swelling, deformation, or cracks, and replace if necessary.Avoid contact with organic solventsUnless it is confirmed that the material (such as fluororubber, PTFE) can withstand it.

• Lid and PortIt is also necessary to carefully clean the threads and interfaces to prevent salt crystallization from causing poor sealing or difficulty in electrode insertion.

4. Assembly and storage

• Ensure all componentsdryAssemble later to prevent mold growth in humid environments.

• Place the cleaned testing pool inInside dust-proof cabinets or containers.

• When not in use for a long timeIt is recommended not to tighten the lid, maintain ventilation, and prevent the generation of odors.

Special precautions for different pool materials

summarize the key points

• suit the remedy to the caseSelect the appropriate cleaning method based on the medium and pollutant type of this experiment.

• Deionized water is keyThe final repeated rinsing must use high-purity water.

• Prevention is better than cureClean immediately after each experiment, with low difficulty.

• Establish SOPDevelop standard cleaning procedures for the laboratory to ensure consistency among different personnel.

Following the above precautions can extend the service life of the flat corrosion testing pool and ensure the authenticity and reliability of your electrochemical testing data.