Using syringes for groundwater filtration in the field is a popular low-cost option. It can be an ideal choice if you are not using a pump, and have a manual device such as a bailer.
When using a syringe 50ml at a time can be pushed through a filter.
Small low-capacity filters can be used where turbidity is low. However if turbidity is high then it may be better to use a high capacity filter such as the AquaPore Biodegradable Filter Capsule.

Syriges are available in luer-lock, catheter tipped, or eccentric tipped varieties.