ENV-203
Pedestal Mount Pellet Dispenser, 45 mg

ENV-203M
Modular Pellet Dispenser, 45 mg

Magazine type pellet dispensers as previously offered by the Ralph Gerbrands Co. and others have proved their reliability over the years. This model features a quiet 28 V DC stepper motor, tested repeatedly, and found to deliver a whole pellet virtually 100% of the time. This is significantly better than any other dispenser tested, including the original Gerbrands' model. This large capacity magazine holds over three thousand 45 mg pellets. All new systems will be shipped with ENV-203M Modular Pellet Dispensers unless otherwise requested or in special applications where space does not permit the use of the modular design. When ordering separately, specify ENV-203M or ENV-203 as needed. If audio feedback, like the original Gerbrands' feeder is desired, order the ENV-135M clicker module. 

ENV-203M-45IR
Modular Pellet Dispenser; 45 mg for Rat with Built-In Infrared Sentry

ENV-203-45IR
Pedestal Pellet Dispenser; 45 mg for Rat with Built-In Infrared Sentry 

The concept of an infrared photobeam to detect and confirm the delivery of a pellet was first developed by Med Associates for use with the one gram pellet and candy dispenser. This feature has proven so effective that it is now offered on most of our dispensers. It has been designed for those applications where pellet delivery is absolutely necessary and a non-delivery alarm is desirable. A sensitive infrared photo-beam detector has been added to the delivery tube of the dispenser. If pellet delivery is not confirmed, a built-in microprocessor will repeat the delivery sequence up to five times within 150 milliseconds. Five consecutive failures set an alarm signal line that can be detected with any 28 V DC input card. The modular dispenser is mounted on a 1/4 size modular panel. Connection to the control box requires one input and one output.

Dimensions: 
ENV-203M-45IR: 5.0" W x 7.0" H x 6.0" D 
(12.7 cm x 17.8 cm x 15.2 cm)
Panel: 3.0" W x 3.25" H (7.6 cm x 8.3 cm)
ENV-203-45IR: 4.0" W x 9.25" H x 5.0" D 
(10.2 cm x 23.5 cm x 12.7 cm)

ENV-203-14P
Pedestal Pellet Dispenser; 14 mg for Mouse

This pedestal style dispenser is calibrated for 14 mg Bio-ServeR pellets. It features a quiet 28 V DC stepper motor that will not startle the mouse when a reinforcer is delivered. The capacity of this unit is approximately 3850 pellets. 

Dimensions: 
3.0" W x 4.0" H x 6.0" D (7.6 cm x 10.2 cm x 15.2 cm)

ENV-203M-20
Modular Pellet Dispenser, 20 mg for Mouse

ENV-203-20
Pedestal Mount Pellet Dispenser, 20 mg for Mouse

This dispenser features a quiet 28 V DC stepper motor that will not startle the mouse when a reinforcer is delivered. The capacity of this unit is approximately 7000 pellets. The modular dispenser is mounted on a 1/4 size rat modular panel.

Dimensions: 
ENV-203M-20: 5.0" W x 7.0" H x 6.0" D 
(12.7 cm x 17.8 cm x 15.2 cm)
Panel: 3.0" W x 3.25" H (7.6 cm x 8.3 cm)
ENV-203-20: 4.25" W x 9.25" H x 5.0" D 
(10.8 cm x 23.5 cm x 12.7 cm)

ENV-203-75
Pedestal Pellet Dispenser; 75 mg for Rat or Primate

This dispenser features a quiet 28 V DC stepper motor that will not startle the animal when a reinforcer is delivered. This particular feeder is designed specifically for 75 mg pellets. The capacity of this unit is approximately 1750 pellets. 

Dimensions: 
4.25" W x 9.25" H x 5.0" D 
(10.8 cm x 23.5 cm x 12.7 cm)

ENV-203-MINI
Mini M&M’sR Pedestal Dispenser

This dispenser features a quiet 28 V DC stepper motor that will not startle the animal when a reinforcer is delivered. This unit is designed specifically for dispensing mini M&M’sR. The capacity of this unit is approximately 600 mini M&M’sR.

Dimensions:
4.0" W x 9.25" H x 5.0" D (10.2 cm x 23.5 cm x 12.7 cm)

ENV-200R2M trough type shown

ENV-200R2M
Trough Type Pellet Receptacle for Rat

ENV-200R1M
Cup Type Pellet Receptacle for Rat

These are two of the most popular receptacle cups used with the 45 mg pellet dispensers. Each receptacle is mounted on a 1/4 size rat modular panel and the entrance opening to each measures 2.0" x 2.0" (5.1 cm x 5.1 cm). Both style receptacles are suitable for pellet dispensers. Also available for the trough type is photocell detection of the pellet itself (ENV-200R2MA). Additional components to consider for either receptacle include a receptacle light (ENV-200RL) and head entry detector (ENV-254-CB). 

Dimensions: 
Panel: 3.0" W x 3.25" H (7.6 cm x 8.3 cm)

ENV-200R1M-6
Extra Tall Cup Type Pellet Receptacle for Rat

ENV-200R2M-6
Extra Tall Trough Type Pellet Receptacle for Rat

Extra tall receptacles have been designed for applications where an animal is fitted with headgear for drug infusion or micro dialysis. The receptacle opening on both the trough type and cup type is 6" (15.2 cm) tall and is mounted on a 3/4 size rat modular panel. This photo shows the cup type receptacle. Contact Sales for extra tall receptacles made of all plastic for physiological recording.

Dimensions: 
Panels: ENV-200R1M-6: 3.0" W x 9.75" H (7.6 cm x 24.7 cm)
ENV-200R1M-6:?3.0" W x 9.75" H (7.6 cm x 24.7 cm)

ENV-200R1AM
External Pellet Cup for Rat

This component takes the stainless steel cup from the pellet receptacle (ENV-200R1M) and places it on the outside of a 1/4 size rat modular panel for placement inside the chamber. This may be preferable in applications where an animal is fitted with a head block for drug infusion or micro-dialysis.

Dimensions: 
Panel: 3.0" W x 3.25" H (7.6 cm x 8.3 cm)

ENV-200R7
Pellet Receptacle, 97–300 mg 

This receptacle is mounted on a 1/4 size rat modular panel and used to deliver 97–300 mg pellets. The receptacle opening measures 2.0" x 2.0" (5.1 cm x 5.1 cm). Additional components to consider include a receptacle light (ENV-200RL) and head entry detector (ENV-254-CB). 

Dimensions: 
Panel: 3.0" W x 3.25" H (7.6 cm x 8.3 cm)

ENV-303M
Pellet Receptacle for Classic Mouse Modular Test Chamber

ENV-303W
Pellet Receptacle for Wide Mouse Modular Test Chamber 

This trough style receptacle is mounted on a 1/2 modular mouse panel. The access opening is 1.125" W x 1.0" H x 0.75" D (2.9 cm x 2.5 cm x 1.9 cm). Consider adding these components to the receptacle: head entry detection (ENV-303HD), receptacle light (ENV-303RL), or automatic guillotine door (ENV-340A). 

Dimensions: 
Panels: ENV-303M: 1.5" W x 3.5" H (3.8 cm x 8.9 cm)
ENV-303W: 2.355" W x 3.5" H (6.0 cm x 8.9 cm)

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ENV-200-27 
Dual Feeder "Y" Tube

This small adapter facilitates connecting two pellet dispensers to a common receptacle.

ENV-200RL
Receptacle Light for Rat

Add this receptacle light to most rat pellet receptacles at time of order. This top mounted light may limit placing some modules directly above the receptacles. 

Dimensions: 
2.4" W x 1.36" D x 0.96" H
(6.1 cm x 3.5 cm x 2.4 cm)

ENV-303RL
Pellet Receptacle Light for Mouse Wide Modular Test Chamber

Add this receptacle light to the pellet receptacle for mouse. This top mounted light may limit placing some modules directly above the receptacle.

Dimensions: 
1.0" W x 1.125" L x 0.375" D
(2.5 cm x 2.9 cm x 1.0 cm)

ENV-210M
Modular Guillotine Door for Rat Receptacles

This 28 V DC controlled motorized door may be placed in front of a standard receptacle cup to limit access to the reinforcer. The door and receptacle are sold separately. The standard door is aluminum; however, a clear acrylic plastic door may also be specified by ordering ENV-210M-CLEAR. It is mounted on a 1/2 size rat modular panel.

Dimensions: 
Panel: 3.0" W x 6.5" H (7.6 cm x 16.5 cm) 
Door Opening: 2.0" W x 2.0" H (5.1 cm x 5.1 cm)

ENV-200-FC 
Ad Lib Feeding Food Cup for Rat

This receptacle provides a reserve of food for ad lib feeding. It may be used with the modular guillotine door (ENV-210M) to limit access or a head entry detector (ENV-254-CB) to monitor time at the food cup. For more sophisticated data collection, consider a “take and replace” pellet delivery system or one of the food intake monitors (ENV-200FCW or ENV-200FCW-D). It is mounted on a 1/4 size rat modular panel.

Dimensions: 
Panel: 3.0" W x 3.25" H (7.6 cm x 8.3 cm)