Posted By Ian Waldram
Have you looked at the e-COSHH Essentials website, produced by HSE? The whole point of the 'control banding' approach is that very low-risk = low effort on detailed assessment, and the risk band is linked both to the intrinsic hazards of the chemical and the way it's to be used.

I havn't used the site for a while, but I think it might give you a simple assessment based on a 80/20 approach, leaving you to concentrate on those few uses with a higher risk?

Posted By Chris Packham
Not only may the information on the SDS be wrong, but in many cases it may be irrelevant. In the first place, if you are considering risk assessment for skin exposure you cannot rely upon risk phrases. There are literally thousands of chemicals with no risk phrase that can cause skin damage. In fact, statistically the most common chemical to cause occupational contact dermatitis is water (wet work). So a risk assessment for skin exposure done according to COSHH essentials (or the guidance in the ACoP) may show little or no risk whereas the reality could be quite different.
Furthermore, remember that SDS are written for CHIP and not for COSHH. Thus the information may not actually reflect what you are actually handling in the laboratory.
You also mention that you dilute with a solvent. The question then iS: "What solvent?". If you are considering gloves then you will need to establish which glove to use and for how long you can use it. You cannot take the manufacturers' published breakthrough times as an indication, since these are produced in a laboratory test according to EN374 (which specifies the test at the wrong temperature anyway!) and seldom reflect what is obtained in practice. There are methods for testing gloves under actually working conditions, but they are not that simple and can be expensive.
In my work I see many risk assessments for chemical exposure and skin that are simply not correct. So be careful of "simple" techniques. They may get you into trouble.
Chris