The V&P Reagent Dispenser was developed in
response to a customer who wanted an inexpensive and simple way to
maintain reagents in a reservoir. By simply connecting a reagent
bottle to one of our Spillway Reservoirs
(VP 549ETOH or
VP 549H2O) with a flow restrictor in the line we can control the flow
rate of reagent down the line. We offer a range of flow restrictors
(VP 567B, VP 567C, VP 567D
and VP 567E) which regulate the flow from
0.05ml/min to 260ml/min.
For fine tuning the flow rate, the bottle can be moved higher to increase
the head pressure and flow rate or by lowering the reagent bottle you can
decrease head pressure and lower the flow rate.
You can also use the Keck pinch valve to regulate the flow.
The ideal rate is just
enough to produce a small overflow in the Spillway Reservoir. The
advantage of the Spillway reservoir is that it can never over fill, never
runs dry and you can recover the overflow reagent.
This is a much more economical than using a recirculating pump or
a sensor/refill system. Furthermore it is more flexible than the
"Humming Bird" type of reagent reservoir in that it can be placed any
where on the robot deck.
Another application is
to use the V&P dispenser to dispense wash
reagents or alcohols to flush and clean the spillway
reservoirs during pin tool washing
ring stand post is screwed into a base that has the foot print of a microplate
so it can be placed on the robot deck in a tile. The post screw is
1/4 20 thread and can be screwed directly into many workstation support
tables. The reagent bottle holds 1 liter.
Four liter reagents bottle systems are also available (VP
Here's a video of a Biomek Robot using one of our pin
tools and some accessories (VP
549ETOH, VP 565).
photo to the right shows the VP 566A kit on a VP 903B Pin
1 LITER LOW DENSITY POLYETHYLENE NALGENE BOTTLE WITH 0.91 METER
TALL RING STAND WITH SBS BASE, RING STAND CLAMP, TUBING, TUBING,
CLAMP AND VELCRO STRAP
1 GAL./4L LOW DENSITY POLYETHYLENE CARBOY WITH TUBE ATTACHMENT ON
BOTTOM. COMES WITH TUBING, PINCH CLAMP, VELCRO
STRAP AND VP 567D FLOW RESTRICTOR
(NO RING STAND)
0.102 MM DIAMETER FLOW RESTRICTOR - flow rate =
0.053 to 0.39 ml/min
0.254 MM DIAMETER FLOW RESTRICTOR - flow rate =
0.7 to 5.3 ml/min
0.508 MM DIAMETER FLOW RESTRICTOR
- flow rate = 7.9 to 23.8 ml/min
0.965 MM DIAMETER FLOW RESTRICTOR
- flow rate = 82 to 260 ml/min