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PENI CYLINDER DISPENSER & PENI CYLINDERS
The Peni Cylinder Dispenser includes a hopper that holds 300+ stainless steel peni cylinders (flat face or beveled edge) and can dispense 4 or 6 peni cylinders with a single pull of the lever. Peni cylinders are accurately dropped onto 90-100mm round plates.  All products are designed and manufactured in the USA.  ​

TRINITY V3 Antibiotic Zone Reader automates antibiotic potency assays following USP, EP, JP Methods.  Learn more >
Peni Cylinder Dispenser
Peni Cylinder Dispenser
Peni Cylinder Dispenser
 
Material: 
Stainless Steel and Aluminum

Dimensions:
Width: 13 cm / 5.25 in
Height: 31 cm / 12.25 in
Depth: 13 cm / 5.25 in

Made in the USA

Select video above to view (1 minute). 
Select the icon on the bottom right of the video for full screen mode.

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Flat Face Peni Cylinder
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Beveled Edge Peni Cylinder
Peni Cylinders (Flat Face or Beveled Edge)

Material: Stainless Steel

Dimensions: 
Inner diameter: 6 mm
Outer diameter: 8 mm
Length: 10 mm   

Tolerance: ​+ 0.1 mm

Made in the USA
Peni Cylinders & Dispenser - Common Questions:

1) What is the difference between flat face and beveled edge peni cylinders?
There is no conclusive evidence that one type of peni cylinders performs better or is more durable.  Some customers prefer beveled edge because they believe this type of peni cylinder 'sticks' to the agar better than flat face.  However, the decision to use one type is simply a customer preference.  Please note beveled peni cylinders are approximately 15% more expensive, so this is also a key factor. 

2) What is the minimum number of peni cylinders I can purchase?
100 peni cylinders is the minimum order.  
 
3) Are the peni cylinders made of 316 or 304 grade stainless steel?
Our peni cylinders are made of 316 stainless steel.  316 stainless steel is more resistant to corrosion and is a higher grade versus 304 stainless steel.

4) How do I clean peni cylinders?
USP <81> recommends: 'Carefully clean cylinders to remove all residues; occasional cleaning in an acid bath, e.g., with about 2 N nitric acid or with chromic acid is required.'

Contact Giles Scientific for pricing

Customer Testimonials - Peni Cylinders & Dispenser
"Excellent products and technical customer support"

"It has been a pleasure working with Giles Scientific and their incredible team. They offer some of the best customer support I have ever experienced with a vendor. They are very quick to reply to customer queries and are also very helpful. The quality of their peni dispenser and peni cylinders is excellent.  The peni dispenser works like magic in setting up antibiotic assays. The analysts running the assay are very pleased using the peni dispenser.

We currently purchased the TRINITY V3 and it has made the antibiotic assay work a lot faster.  It was very easy to run the qualification on the equipment and the technical support was very prompt and helpful with answering all our questions.  Purchasing this piece of equipment was a great investment for the lab.  It has saved the analysts a tremendous amount of time and has increased productivity and efficiency."

Heather Crowell
Manager, Microbiology Laboratory
Underwriter Laboratories, Canton, MA, USA
Customer since 2010


"Peni cylinders and dispenser significantly streamlined our sample preparation"

"It has been a pleasure working with Giles Scientific.  We purchased their peni dispenser and peni cylinders and found them to be of excellent quality and easy to use.  Using their dispenser has streamlined our sample preparation and consequently significantly reduced processing time and data variability.Giles Scientific also offered some of the best customer support I have experienced in that they were prompt, knowledgeable, and willing to offer help beyond the products we purchased."

Seth Flaaten
Microbiologist
Accelerated Analytical Labs, Milwaukee, WI, USA
Customer since 2016


"Peni cylinder dispenser is easy to use, efficient, and compact for easy storage"

"First, we want to thank Giles Scientific for all their assistance and customer support over the past few years. They respond promptly and provide clear solutions. Along with the purchase of the TRINITY V3 Zone Reader, we also purchased their Peni-Cylinder Dispenser and Peni-Cylinders. Their Peni-Cylinder Dispenser is easy to use, efficient, and compact for easy storage. The Peni-Cylinders are easy to clean and work well with the dispenser. We highly recommend other companies to  purchase Giles Scientific equipment to assist with their USP <81> antibiotic assay testing."

Pedro J. Cantero
Microbiology Scientist
DPT Laboratories, San Antonio, TX, USA
Customer since 2012


"Peni Cylinders and Dispenser were a great addition to our laboratory"

"The Peni Cylinders and Dispenser were a great addition to our laboratory. Customer service was excellent in quickly determined what would work best for our needs. The products are very good quality and durable. Set up was easy and increased ergonomics. We no longer have to bend over and individually place each cylinder in it’s spot. The analysts using the equipment are happy with the upgrade."

Laura Olson 
QC Manager
Pharmgate Animal Health
Omaha, NE, USA
Customer since 2011

"Exceptional customer service from Giles Scientific"

"I received quality customer support regarding common and specific questions about products (TRINITY V3 System) and supplies (peni cylinders). The product specialist was very knowledgeable and able to readily assist with my purchase. I chose the flat peni cylinders. The order and delivery went smoothly and the cylinders were very good quality."

J. Campbell
Microbiology Group Leader
VistaPharm Inc, Largo, FL, USA
Customer since 2012

Click here to view all Customer Testimonials

TRINITY V3 Antibiotic Zone Reader
Testing Modules:
Antibiotic Potency Zone Reading
Colony Count
​Accessories & Features: 
Peni Cylinders
Peni Cylinder Dispenser

21 CFR Part 11
IQ OQ PQ Validation
​Training & Support
​Resources: 
Customer Testimonials
Current Customers
Common Questions
Brochures
​Videos
Methods: 
USP 81
EP
JP
Partner: 
Collaborate
Custom Applications
Distribution
Contact Giles Scientific
Giles Scientific Inc is an ISO 13485:2016 certified company.
Giles Scientific Inc © 1984-2025 ALL RIGHTS RESERVED. BIOMIC®, TRINITY™ are trademarks of Giles Scientific Inc. Santa Barbara, California, USA

*Agar Dilution & Broth Microdilution - Note in USA: For Research Use Only.  Not for use in diagnostic procedures
**TRINITY V3 functions are not intended in clinical labs for diagnostic procedures.