Pellet Dispensers and Accessories

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.





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ENV-203-45IR
Pellet Dispenser, Magazine Type, 45 mg. with Built-In Infrared Sentry

The concept of an infrared photo beam to detect and confirm the delivery of a pellet was first developed by Med Associates, Inc, for use with the one gram pellet and candy dispenser, which has been modified to deliver a number of items including dog food and peanuts. These features proved 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 photobeam detector has been added to the delivery tube of the ENV-203 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.

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ENV-203-14
Pellet Dispenser, 14 mg

This magazine style dispenser is calibrated for 14mg Bio-Serve^® pellets. It features a quiet 28 V DC stepper motor that will not startle the mouse when a reinforcer is delivered.  Based on the same design as the 45 mg dispenser, this dispenser has been tested repeatedly and found to deliver a whole pellet virtually 100% of the time. The capacity of this unit is approximately 3850 pellets.


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ENV-203-20
Pellet Dispenser, 20 mg 

This magazine style features a quiet 28 V DC stepper motor that will not startle the mouse when a reinforcer is delivered.  It is based on the same design as the 45 mg dispenser.  This dispenser has been tested repeatedly and found to deliver a whole pellet virtually 100% of the time.  The capacity of this unit is approximately 7000 pellets.

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ENV-203-75
Pellet Dispenser, Magazine Type, 75 mg.

This unit is identical to the ENV-203 with a dispensing mechanism designed specifically for a 75 mg pellet. The capacity of this unit is approximately 1750 pellets.

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ENV-203-75IR
Pellet Dispenser, Magazine Type, 75 mg. with Built-in Infrared Sentry

This unit is identical to the ENV-203-75 with the infrared sentry option added.

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ENV-203-97
Pellet Dispenser, Magazine Type, 97 mg.

This unit is identical to the ENV-203 with a dispensing mechanism designed specifically for a 97 mg pellet. A 94 mg pellet may also be used. The capacity of this unit is approximately 1250 pellets for either size.

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ENV-203-97IR
Pellet Dispenser, Magazine Type, 97 mg. with Built-in Infrared Sentry

This unit is identical to the ENV-203-97 with the infrared sentry option added.

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ENV-203-190
Pellet Dispenser, Magazine Type, 190 mg.

This unit is identical to the ENV-203 with a dispensing mechanism designed specifically for a 190 mg pellet. The capacity of this unit is approximately 600 pellets.

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ENV-203-190IR
Pellet Dispenser, Magazine Type, 190 mg. with Built-in Infrared Sentry

This unit is identical to the ENV-203-190 with the infrared sentry option added.

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ENV-203-300
Pellet Dispenser, Magazine Type, 300 mg.

This unit is identical to the ENV-203 with a dispensing mechanism designed specifically for a 300 mg pellet.  The capacity of this unit is approximately 400 pellets.

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ENV-203-300IR
Pellet Dispenser, Magazine Type, 300 mg. with Built-in Infrared Sentry  

This unit is identical to the ENV-203-300 with the infrared sentry option added.

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ENV-203-MINI
Mini M&M's^® Dispenser

This unit is identical to the ENV-203 with a dispensing mechanism designed specifically for mini M&M's^®. The capacity of this unit is approximately 600 mini M&M's^®. 

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ENV-200-R1M
Pellet Receptacle, Cup Type

These are two of the most popular receptacle cups used with the ENV-203 45 mg dispenser.  The entrance opening to each measures 2.0" x 2.0" (5.1 cm x 5.1 cm).  The traditional cup type may be used for pellets and liquid drops (see ENV-200R3M). It may also be mounted externally (see ENV-200-R1AM).  The trough type is suitable for pellet dispensers only.  A modification of the trough type has also been used for systems requiring photocell detection of the pellet itself.  Receptacle light (ENV-200RL) and Head Entry Detector (ENV-254) may also be added to either model.

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ENV-200-R1AM
External Pellet Cup

This component takes the stainless steel cup from the ENV-200-R1M Pellet Receptacle and places it on the outside of the modular panel.  This may be preferable in applications where an animal is fitted with a head block for drug infusion, phyiological recording, microdialysis, etc.

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ENV-200R7
Pellet Receptacle, 75-300 mg.

This unit is similar to the ENV-200-R2M trough dispenser with a modified delivery system designed to handle the larger pellets.

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ENV-303M 
Pellet Receptacle - Mouse 

This trough style receptacle is placed on a ½ modular mouse panel. The access opening is 1.125" W x 1.0" H x 0.75" D (2.5 cm x 2.5 cm x 1.9 cm). Add model ENV-303HD for head entry detection, model ENV-303RL for a receptacle light, and model ENV-340A for an automatic guillotine door.

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ENV-200-27 
Dual Feeder "Y" Tube

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

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ENV-200RL
Receptacle Light

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

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ENV-303RL
Receptacle Light

Add this receptacle light to the ENV-303W pellet receptacle. Note, this top mounted light may limit placing some modules directly above the receptacle.


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ENV-210M
Modular Guillotine Door

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.

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ENV-200-FC 
Ad Lib Feeding Food Cup

This receptacle provides a reserve of food for ad lib feeding. It may be used with the ENV-210M door to limit access or an ENV-254 head entry detector 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).

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