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Potential dermal exposure during mixing and loading of amateur pesticides for use in gardens in the UK - PS2007

Previous Defra funded studies have shown that for amateur users of home and garden products, potential exposure to pesticides is greatest during mixing and loading and is exacerbated by the use of the container cap as a measuring device. This method of concentrate measurement was also shown to be inaccurate in the majority of cases.

Up to 90% of the total potential exposure values are due to contact with the concentrate during mixing and loading operations, reflecting the need for extreme care at this stage. However, there is no recommendation that gloves should be worn on any of the product labels, for this operation.

Drips and spillages on and around the bottle and residues found within the measuring cap are also considered to provide a source of contamination of the operator during subsequent operations

The Predictive Operator Exposure Model (POEM, SC 8001), for hand-held applications, assumes a single mix and load operation and does not include use of a measuring cap. Spillages onto the hands, from over-filling the cap, and potential contamination on refilling, from residues left on the bottle top and cap contribute significantly to the total exposures measured in this study. This may have led to an under-estimation in the POEM, when compared to the scenarios here.

For home and garden pesticides there are few data to indicate levels of contamination during mixing and loading and application. Studies will be done to generate priority data to determine potential dermal exposure with commonly types of amateur pesticide containers and measuring devices.

1.Determine the most appropriate container and measuring devices to use for the study. This will be done using data for potential operator exposure with H/G use of pesticides form earlier projects, and also based on the availability of the pesticide container types on sale.
2.Investigate the most appropriate method to use for measuring (potential) dermal exposure of the hands
3.Carry out studies to determine potential dermal exposure of hands and other body areas during the mixing and loading task for amateur pesticides used in gardens.

Project Documents
• Final Report : Potential dermal exposure during mixing and loading of amateur pesticides for use in gardens in the UK   (339k)
Time-Scale and Cost
From: 2005

To: 2006

Cost: £40,849
Contractor / Funded Organisations
Central Science Laboratory
Operator Safety              
Pest and Weed Control              
Pesticide use              
Plants and Animals              
Fields of Study
Pesticide Safety