Module of analysis by sequential injector and solenoid based on vu00c1lvulas minipumps management solutions in chemical tests

摘要

Module of analysis by sequential injector and solenoid based on vu00c1lvulas minipumps management solutions in chemical analyses.This paper proposes a CIS Module modular (Figure), consisting of a block of selection of solutions (1) based on six solenoid valves valve (pinch), the confluence of six independent channels and a common channel and a block of the propulsion of solutions (2) based on the use of Two solenoid 8 microlitres per pulse minipumps.The block selection of solutions was constructed by associating together choke valves (pinch) (3 to 8) normally closed to a confluence of multi vies (9), allowing the selection of any one of the scheduled routes functional (10 to 15), while the block of transport of soluu00e7u00f5 ES is the confluence of three tracks (16) associated with the two minipumps solenoid (17 and 18).With the function of vacuum (17) and a pump (18) through any one of the routes. The confluence multi vies (9) was constructed using a block of acrylic formed hexagonal edge of 1.2 cm and a thickness of 1.3 cm which was machined properly to be affixed connectors for tubes of 0.8 mm internal diameter.One of the advantages of interesting of this assembly is able to avoid the contamination of the fluid charger for the solutions handled. This is because the minipumps solenoideestu00e3o prepared in the process of pumping and aspiration and fluids of different coil retention (19) are sent to disposal (21).The device proposed can be used in modules for analysis by sequential injection analysis without loss.