Opus Clean


I summarized frequently asked questions about Opus Clean.

Is it truly cleansing, skin friendly, materials and environment friendly?

It does not contain any chemical products leading to harm to the human body, water quality and environmental pollution.
  • Because of its safety, it is also used in medical and pet supplies industry.
  • It is always used as a cleaning liquid in an environment where unspecified number of people touches such as washing OA equipment in the office, protective cover of library books.
  • It is also used as a base for cosmetics at cosmetic manufacturers.

Is there antistatic / dirt repellent effect?

The antistatic effect of static electricity is superior to that of deionized water as it is also in the separate paper report.
  • It is used for lens cleaning before coating in the lens manufacturing process of a major camera maker.
  • Since the adhesion of dust due to static electricity is not allowed for the lens before coating, this solution is used to remove static electricity and dirt, and then rinsed with warm pure water.
  • It was used as a record cleaner at NHK / FM in the era when record play was the main in radio broadcasting.
  • Record playback is no longer mainstream Currently being sold as a record cleaner at domestic record store · audio store.
  • It is also the reason why it is adopted at various places, not only detergency, but also the point that it can prevent the adhesion of dust again by preventing static electricity charging.

Synthetic surfactant · Sodium hydroxide · Alcohol not included?

Synthetic surfactants have the property of forming or remaining on the surface of the material.
Sodium hydroxide (caustic soda) · Alcohols combine with fats and oils to cause a reaction called saponification, and as a result, surfactants are produced. So soap type will be produced on the board surface.

  • Synthetic surfactant as well as caustic soda and alcohol are not included in this product.
  • Even when there is sebum on the record board surface, surfactant is not generated by saponification action, so it will not cause a change in sound quality due to residue on the board surface.
  • It is Opus Clean that makes dirt and deposits on the board float up and makes it removable.
  • Finally you can clean it with a cloth etc. or rinse with purified water to remove dirt and clean it without leaving deposits.

After dropping the liquid onto the board, does it not have to be left for a while in order to obtain the removal effect?

Please do not leave "as is" after dripping.
The peeling effect against soiling is exerted because the electrolyte in the solution is dissolved in the state of ions in water.
Conversely, if time is left, only moisture will evaporate and the peeling effect will be lost, so please be sure to wipe off everything without side dishes. It is the part that is closely related to the efficacy because it is electrolyzed water to create the state of ions, so please do not let it dry and leave as it is. If it dries white crystalline material may remain. This is a crystallized electrolyte in the liquid, which itself is harmless, but it is possible that the crystals will be left incorrect usage that the effect of the liquid will be lost. It is crucial that you throw away the image like "detergent and seal peeling agent" which "wait a little until it works".

After using liquid, is it not that the surface has become strongly alkaline?

As far as dose and usage are adhered, it is neutralized chemically and electrostatically.
Since the record board (PVC) originally has strong alkali resistance, there is no need to worry about the fact that the solution is strongly alkaline.
Again, no image like detergent or bleach is necessary.
LP made of PVC is said to generate noise by precipitating the reversible agent / stabilizer that has been blended on the surface over time.

Can Opus Clean also eliminate this?

It is said that certain stabilizers and reversible agents used in PVC will certainly transition from the inside with the passage of time.
Although it seems to be called "bleed" in the technical term, PVC can adjust various hardness by adding a reversible agent, but it seems to be a disadvantage to cause bleeding.
In the case of a record, it seems that the reversible agent which oozed out to the surface reacts with oxygen in the air and oxidizes, making the surface tight, and originally losing the necessary thermal reversibility for the record, so that the sound quality · It is safe to remove it in terms of noise.
Although it seems that most of the reversible agent is said to be an ester type, Opus Clean is also effective in removing this.
Also, the reversible agent and the liquid do not cause any harmful reaction.


Other series of opa screens are widely used not only as a record cleaner but also in the following cases.
  • Cleaning of library books, desks, bookcases
  • OA / IT equipment Smartphone / tablet terminal screen cleaning
  • Pet shop Toilet cleaning · Pet care goods as a substitute for shampoo for pet
  • Cleaning in the railroad car
  • Cleaning the carpet mainly in hotel rooms · banquets etc.
  • Regional professional electric shop air conditioner washing
  • Cleaning of dental office equipment

About anti-static

The results of experiments conducted to confirm the effect of suppressing this with respect to obstructions caused by electrostatic charging, especially dust adhesion, are shown below.

Test material: PVC board _φ300 × t1 mm (Main products using polyvinyl chloride · · · Record board / wire covering etc.)
Because polyvinyl chloride is an insulator, static electricity generated will be charged for a long time, and in most cases will be charged positively.

Friction was carried out with two cotton cloths on a polyvinyl chloride board, and after confirming that an electric resistivity of 1018 ohm · cm occurred (static electric load), it was confirmed that Opus Clean was applied to one test plate, and pure water Each 5mL each.
The liquid was wiped off with neutral paper, after drying, similar friction was again carried out using cotton cloth, and the surface resistivity of each was measured with an electrometer.
The lower the resistance value, the higher the conductivity of the surface and the effect of suppressing the charging of static electricity.

[Measurement result]
  Opus Clean Pure water
Surface resistivity 1T ohm 1000000T ohm
[Reference value]
purpose Required level of surface resistivity
Preventing damage in a static state (dust adhesion prevention) 1T ohm ~ 10T ohm
Failure prevention in dynamic state (always antistatic) 0.01T ohm ~ 1T ohm

Normally static electricity is connected with negative ions in the air and it is electrically neutralized, but due to its high insulation resistance value it is easy to be electrostatically charged and it is easily charged for a long time Prevention of charging failure of synthetic resin such as polyvinyl chloride As you can see from the fact that the numerical targets are reached in the table above, it is considered that the purpose of preventing disability is achieved by using the Opus Clean at regular intervals.

On the difference of washing with alcohol containing sodium or sodium hydroxide and Opus Clean

After washing with Opus Clean, the liquid is cloudy and there is no sediment other than dust.
This is because the dirt peeled off by the contained negative ions is dissolved in the liquid.
On the other hand, precipitation may occur in the liquid by washing with a solution containing alcohol or sodium hydroxide.
It seems that something like saponification occurs in which alcohol and sodium hydroxide are mixed with water, grease and dirt, so that a substance close to soap is produced, which is considered to be a precipitate.
When this saponification occurs, the one closer to the soap produced is a so-called surfactant, so in the case of a record board it will be a shiny finish, but it is a kind of soap containing fats and dirt on the board and remains as a film Because it means that there is something, the influence on sound quality and hands can not be ignored.
Also, because alcohol has high penetrating power, it swells the record board and causes rapid temperature decrease and contraction due to subsequent evaporation heat.
Repetition of this swelling and contraction may cause cracks and damage to the board surface, so it is necessary to use alcohol carefully.

About differences from similar products

Although it can not be said unconditionally, there seems to be something that says sodium hydroxide (caustic soda) generated as a result of electrolysis of saline, as it is, among the products that says electrolysis and negative ions.
Caustic soda has strong detergency but because of its deleterious nature, there are many inevitable prohibited items inevitably such products, which may damage materials and hands by concentration.
Also, there seems to be some products where ions are extinguished with time, and detergency is lost.

The chemical formula when electrolyzing saline solution is as follows.
2NaCl + 2H2O ==>> H2 + Cl2 + 2NaOH
        (-)   (+)   Sodium hydroxide
Sodium chloride is the most excellent electrolyte and can produce high hydrogen ion concentration, but at the same time sodium hydroxide (caustic soda) "Poisonous and Deleterious Substances Control Law" specified substances and substances containing more than 5% as deleterious substances Has been done. "Is generated, liquid containing electroreduction water / sodium hydroxide obtained by electrolysis of only saline solution is not safe.

Opus Clean not only does not generate sodium hydroxide by adding other electrolyte when electrolyzing water, it is safe without the formation of harmful substances by the bond of hydroxide ion and counter ion, Moreover, we succeeded in maintaining a high hydrogen ion concentration. Also, since reduction by negative ions works, it is also a feature of Opus Clean that it does not cause material corrosion or deterioration due to oxidation.

pH value and living body - familiar example

pH value (hydrogen ion exponent)

pH1 pH7 pH14
Acidic Neutral Alkalinity
Sodium hydroxide pH13 Strongly alkaline
Active alkalinity 76.1
It decomposes proteins intensely, not only has high corrosivity to the skin but also aluminum. Due to the large hydration heat, explosive reactions may occur with solid and water.
Tertiary sodium phosphate pH11.2 Strongly alkaline
Active alkalinity 10.4
It is used for sterilization in the gardening field such as planting scissors, rubber gloves, disinfection of pots, etc. to prevent infectious diseases of plants.
Alkali hot spring pH10~pH11.5 Strongly alkaline
Activity Alkalinity depends on spring quality but is low
Alkaline fountain is easy to precipitate substances, because the total amount of dissolved substances is small, the stimulation to the body is easy, the hot water is soft and comfortable to enter. When I take a bath, I have a feeling that it sticks to my skin.
hydrochloric acid pH1 Strongly acidic Evaporated violently inflicts respiratory organs, and if inhaled in large quantities, it causes pulmonary edema and death. Because it is corrosive to the skin, it causes chemical burns.
Lemon juice pH2 Strongly acidic It is used for soft drinks, salad dressings, etc.
Opus Clean pH12±0.5 Strongly alkaline
Active alkalinity is low enough
Skin corrosion / irritation No, Poisonous and Deleterious Substances Control Law Restrictions Non-irritating to the eye categories of categories.