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A world-leading specialist in the manufacture of high-precision ultraviolet and infrared optical products for scientific and industrial applications reports major production benefits using ‘EnSolv’, the cleaning solvent from EnviroTech Europe, specially formulated for critical component cleaning tasks. The solvent is used in a sealed vapour liquid cleaning machine fully compliant with European emission standards

EnSolv is used to remove wax-based products or “blocking wax”, which is employed for holding glass and quartz optical components onto production tooling, and to thoroughly clean the parts prior to subsequent assembly or coating processes. Its adoption substantially reduced cleaning times and minimised failure rates.

Trichloroethylene had been used previously but had a number of drawbacks that the company had “lived with” for a number of years, particularly high solvent consumption and the possibility of a significant failure rate due to cracking because of high solvent to ambient temperature differential – the decision to review the process presented an opportunity to revisit the effectiveness of the cleaning operation and improve its efficiency.

A number of alternatives were investigated – including aqueous cleaning, HFCs, HFEs, perchlorethylene and methylene chloride – however, following in-depth cleaning trials none of the alternatives offered the unique range of benefits obtained from EnSolv which provides the same solvency power as trichloroethylene and operates at a lower temperature (69 degrees C), which is high enough to break down and dissolve the heavy wax whilst also avoiding the danger of thermal shock and cracking of the delicate components; which are often ground or polished to incredibly tight tolerances measured in wavelengths. Solvents operating at a higher temperature can cause damage to the parts, whilst those working at a lower temperature are not effective at removing the wax.

The introduction of the MEG automated, fully sealed cleaning machine has also resulted in a number of other benefits: in particular, protecting operators from solvent emissions, and because the machine is programmable, it allows selection of one of 10 process programs dedicated to each

type of optical component – giving complete control over quality, monitoring and analysis of the cleaning cycle, without manual supervision. Various cleaning options are now available, including vapour degreasing, agitation and ultrasonics. In many instances cleaning cycle times have been cut from over 30 minutes, to just a few minutes

“The versatility offered by the change to the EnSolv/MEG combination has given us a fresh perspective on all the critical cleaning processes we undertake,” says the company quality manager. “At some stage in the production cycle, everything we manufacture passes through the cleaning department – often several times – so we have been able to look at established practices and modify them accordingly, which in many instances has resulted in significant improvements in productivity. In fact, the new system has enabled us to substantially upgrade this part of our operation.”

In just a few weeks, the machine proved its worth, with very much reduced solvent usage each week and the need for clean-outs – due to the high volumes of wax being used – has been cut from every four weeks before to every four months now. This is in addition to marked improvements in cleaning quality and the savings in time.

EnSolv Specially formulated for cleaning precision parts
‘EnSolv’ has been specially formulated for the cleaning of precision parts – in the electronics and aerospace fields, for example, as well as for optical components. It has a high solvency power and has the ability to breakdown not only waxes, but also heavy oils, greases, lapping pastes, buffing compounds and many other surface contaminants. It can be employed as a drop-in replacement for trichloroethylene and is a highly effective vapour degreaser, especially when used in conjunction with ultrasonic agitation. It is non-flammable and non-carcinogenic and has been approved by major aerospace companies, including Boeing, Airbus and BAe Systems. It is particularly suitable for cleaning long-drawn pipe work, such as oxygen and fuel lines, an application for which it is being used very effectively by a number of defence and aerospace organisations.

EnSolv can be used in most types of solvent cleaning and vapour degreasing machines. EnviroTech Europe work with many manufacturers of component cleaning systems worldwide on the development of tailored cleaning processes. Full technical information is available at

EnviroTech Europe Ltd

EnviroTech Europe Ltd supply a complete range of metal cleaning, surface treatment and protection systems which are cost effective, energy efficient and safe for users and the environment. Products are supplied through a qualified network of distributors throughout the UK and Europe.

The Best In Surface Treatment

EnviroTech Europe Ltd supply a complete range of metal cleaning, surface treatment and protection systems which are cost effective, energy efficient and safe for users and the environment. Products are supplied through a qualified network of distributors throughout the UK and Europe

Products and Services
Ensolv – Vapour Degreasing Solvents For Precision Cleaning
Environmentally friendly precision vapour degreasing and cleaning solvents for the aerospace, precision engineering, medical, optical and electronic industries.

EnSolv vapour degreasing solvents are the most effective alternative to trichloroethylene which is due to be phased out of use in Europe during 2016. Fast economical cleaning and degreasing in one tank using minimal floor area.

Aquus – Water Based Metal Cleaning And Pretreatment Processes
A range of innovative and sustainable water based metal cleaning and surface treatment products which prepare parts and fabrications for painting, powder coating or electroplating.

Phosphating systems are available to meet the needs of all manufacturers from office furniture to household appliances and for other more demanding applications in transport, aerospace, construction, oil and marine industries.

CORR-EX – Corrosion Protection Solutions
Specialist barrier film corrosion protection products, based on synthetic materials to provide safe, effective, environmentally friendly solutions to lubrication and corrosion problems.

Our solutions help to lubricate and control corrosion, and are unexcelled in preventing deterioration and contamination. Solutions for derusting, passivation, sealing and anti-corrosion packaging are also included in our product range.

Clarea – Industrial Degreasing Solvents
Environmentally safe wipe, brush, dip and immersion cleaning solvents for removing dirt, oil, grease and other contaminants from surfaces without causing harm or leaving residue.

A growing concern regarding environmental issues and health hazards of the most commonly used chlorinated solvents as degreasing agents has led to the formulation of this range of safer industrial cleaning solvents.

  • Our products and treatments offer a combination of benefits:
  • Cost effective solutions for all your metal cleaning and surface treatments needs
  • Processes are safe, environmentally friendly and energy efficient
  • Excellent customer service, technical support and training from qualified distributors throughout Europe

ProSolv – lower cost high performance fluorocarbon cleaning solvent

ProSolv – enables high performance cleaning at lower cost than other fluorinated solvent cleaners.A proprietary tertiary azeotropic formulation based on a fluorinated solvent which can be a direct replacement for chlorinated solvents ProSolv is extremely stable and simple to use meeting all the increasingly stringent legislative demands for safer, non flammable solvents with low environmental impact for the precision engineering and electronics industries

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