Sirinji ndi chida chodziwika bwino choyesera, chomwe chimagwiritsidwa ntchito nthawi zambiri kubaya zitsanzo mu zida zowunikira monga ma chromatograph ndi ma spectrometer ambiri. Sirinji nthawi zambiri imakhala ndi singano ndi syringe. Singano ikhoza kusankhidwa mu mawonekedwe osiyanasiyana ndi mafotokozedwe kuti agwirizane ndi zitsanzo zosiyanasiyana ndi zosowa zoyesera.