Daily cleaners

Table 9 Cleaning Agents Commonly Used in Daily Cleaners...

Daily cleaners generally contain surfactants and are used every day. They may also contain abrasive (deposit-shearing) particles, which enhance product performance. Commonly used daily cleaners with deposit shearing particles are listed in Table 1. 

Table 1 Daily cleaners with shearing particles...

OPTI-EREE daily cleaner Alcon Nylon Soft, PMMA, RGP... 

Deposit-shearing particles are incorporated in suspension form in some daily cleaners. These formulations are more effective than daily surfactant cleaners as they are capable of removing tenaciously bound and denatured deposits. Some of the marketed products contain polymeric beads or silica. When used as recommended, these products are very effective and do not scratch the lens surface. 

Solvents such as isopropyl alcohol have been incorporated in daily cleaners to aid in removing lipid type of deposits. Such solvents have been reported to affect certain lens materials, especially silicone acrylate rigid gas-permeable lenses. 

Recently Cleaner Production Center organized an Environmental Symposium on Transportation and Environment. In recent years, the number of cars in Dnepropetrovsk increased dramatically, predominantly owing to import of used cars, and exceeded 250,000 in 2000. Since the city has no by-pass highways, tens of thousands of cars pass its center daily. They run on cheap fuels containing massive admixtures of aromatic compounds like benzene, toluene and xylene. The fuels produced by coke-and-byproduct plants in Zaporozhe and Dneprodzerzhinsk contain 16... 

Surface and colloid chemistry principles impact many aspects of our daily lives, ranging from the cleaners and cosmetics we use to combustion engines and cement. Exploring the range of this field of study, Surface and Colloid Chemistry provides a detailed analysis of its principles and applications and demonstrates how they relate to natural phenomena and industrial processes. 

Chemistry has made an impact on almost every aspect of daily life from toothpaste to life-saving medicines. The essential feature of this central science is synthesis. Despite the great success and the importance of chemistry to life quality, its public image has deteriorated and in the twenty-first century, we can expect the drive toward cleaner technologies. 

Marketed lens care products fall mainly into the following categories cleaners, disinfectants, lubricants, and multipurpose products. Cleaners are subdivided into daily or weekly cleaners. Disinfectants comprise solutions containing chemical antimicrobial agents, which do not require heating the lenses, and preserved or unpreserved saline solutions, which are used with an electrical thermal device for lens disinfection. These products are also used to rinse contact lenses. Lens lubricants are intended to enhance the comfort of lens wear and are used prior to insertion and during wear. Multipurpose solutions are intended to accomplish... 

There are two types of weekly cleaners those containing enzymes and those containing concentrated surfactants. Products containing enzymes for daily use are usually accepted by the patients and recommended by practitioners. Commonly used enzymatic products are listed in Table 2. 

Most of the cleaners marketed are out-of-the-eye cleaners however, in recent years there has been a trend to try to develop cleaners for use while the lenses are inserted. A specific instance where such products could be beneficial is the case of the extended-wear lenses, which are not removed daily but are worn up to a week at a time. Generally, these cleaners are less effective in removing deposits already formed on the lens surface. However, they may play a role in retarding deposit formation. 

Cleaners for lens wearers are used either on a daily or weekly basis and are fairly innocuous. Even upon gross misuse, they are not likely to be sight-threatening. Professional cleaners, however, are potent as well as toxic if not used properly. They are also more likely to damage the lens if used too frequently. 

In my daily work, I help to create policies aimed at achieving a cleaner transport system in The Netherlands and in Europe. In April 2003,1 arrived at Stanford University in California to study the experience in the United States in the transportation field, including the pursuit of hydrogen vehicles, at the federal and California levels. The goal was to return with practical lessons for The Netherlands. 

In a similar vein (although not precisely soil prevention) is a toilet bowl cleaner meant to be used daily and allowed to sit for as long as overnight [379], In some senses this is similar to the shower rinse products, meant to be used daily to prevent the buildup of soil. The examples in patents are given both as acid and alkaline. 

There are many books, videos, and Web sites about inventions. Inventors can be found in every country or society. There were more inventions in the last century than the previous 1000 years. Some inventions are spectacular, like atomic energy or space travel, while others such as paper clips and vac-mun cleaners are mundane. Even though paper clips and vacuum cleaners might not seem as exciting as space travel, they stUl had a huge impact on our daily lives. 

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