How much sample is required for a pesticide residue analysis


It is important to know why you are taking a pesticide residue sample, what you hope to achieve and to make sure that the sample is representative of the situation. All measures have to be put in place to ensure there is no contamination of the sample ( use of gloves during sampling and change of protective clothing and gloves between different samples) and no deterioration of the sample on the way to the laboratory (Keep the sample in a cool place with limited sunlight). Prior communication with the laboratory is recommended for further assistance.

Samples should be taken in clean un-used containers as supplied by Crop Nutrition Laboratory Services - please order containers via email from An unused Zip-lock bag is also ideal for sampling.

Samples should be dropped at, or sent by overnight service to  Crop Nutrition Laboratory Services Limited, Off Limuru Road, Limuru Kenya, Tel +254 720 639 933., Kenya Tel 0711094444.

Sampling Procedures can be found on   How to take a sample for pesticide residue analysis.

Sample description  Examples     Minimum size of sample

field soil, GHsoil 

sediment, compost


lake, river, irrigation 

reservoir, borehole

    2 litres

Small sized fresh products 

units generally <25g

berries, peas, olives     500 g

Medium sized fresh products 

units generally 25-250 g

apples, oranges, bananas 


    1 kg

Large sized freed products 

units generally >250g

cabbages, cucumbers 

bunches of grapes


2 kg 

at least 6-8 units

Pulses and cereal grains

soya beans, wheat, barley 

rice, maize, 

    1 kg
Oilseeds peanuts, rape seed     500g
Fresh Herbs parsley, chives, rosemary     250g
Beverages coffee beans, tea leaves     500g
Spices Dried spice powders     100g
Animal Fodder

legumes, forages and other 



1 kg 

at least 10 whole units

Dried Animal feed straw, hay     


at least 10 whole units



For more information please contact us through:

Crop Nutrition Laboratory Services Ltd.

Off Limuru Road, Limuru, Kenya

Telephone +254 (0) 711094444, + 254 (0) 720 839 933


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