Redipor Plastic Bottles2


Redipor® range of bottled media products

The Redipor® prepared media range includes a variety of bottled media products offering options in both media type and container.

All prepared bottled media products are manufactured and terminally sterilised within our cleanroom facility. They are  subject to stringent quality checks and QC certified.

The standard screw cap range includes Tryptic Soy Broth and Thioglycollate USP medium, plus diluents such as Buffered Sodium Chloride Peptone or Maximum Recovery Diluent.

Specialist products are available on request. Any formulation or quantity can be discussed.

We've introduced Plastic Bottles to the Redipor® range.  Plastic has a lower temperature requirement for recycling compared with glass.  Therefore, the plastic bottles offer a more environmentally friendly alternative that contribute to your sustainability initiatives.

Why choose Redipor?

Redipor Bottle Specification Data Sheet

Redipor Plastic Bottles Data Sheet

Safety Data Sheet - Redipor Bottled and Bagged Products


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Extensive options for media and bottle type: contact us to place your order

Plastic Bottles

Our Redipor plastic bottles offer a more environmentally friendly alternative to glass bottles. They are strong, easier to handle than traditional bottles, and have high shatter resistance. They are not only tougher than glass, but also lighter in weight.

30ml Universal

Our 30ml glass Universals are manufactured from Type 1 glass and are ideal for bench work. Available with either plastic and metal caps the Universal has a maximum fill volume of 30ml and overall capacity of 38ml. Universals are supplied in packs of 25.

125ml Alpha Bottle

Manufactured in type 3 glass, Alpha bottles are convenient presentation for general purpose media and diluents. The 125ml Alpha has a maximum fill volume of 100ml and an overall capacity of 133ml. 125ml Alpha’s are supplied in packs of 25 with either plastic or metal caps.

175ml Powder Jar

Available as 175ml, 200ml or 500ml, Powder Jars are especially useful where a wide neck bottle is required. Powder jars are manufactured from type 3 glass and come with plastic caps in pack sizes of 12 bottles.

300ml Alpha Bottle

Our 300ml Alpha bottles are manufactured from type 3 glass and supplied with either plastic or metal caps. Ideal for general liquid media requirements, the maximum fill volume is 250ml with an overall capacity of 315ml. 300ml Alpha’s are supplied in packs of 12 bottles.

500ml Winchester Bottle

500ml Winchester bottles are manufactured in type 3 glass with plastic caps. Maximum fill volume is 500ml with an overall capacity of 540ml. An alternative 500ml Alpha (Syrop) bottle with a metal cap is also available. Both are supplied in packs of 12.


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What our customers say

Will Brearley, Administrator

Helvic Laboratories

"Alex in sales is fantastic, Hamish has been super helpful too and I've never had a bad experience. Big thanks to Shareen for completing an NC in about 3 hours today too! Saved us a huge headache down the line and we can't thank you all enough. Easily the best supplier we have - there's a reason we rely on you for our most critical media."

Quality Assurance and Cleanroom Specialist

Manufacturer and Supplier of Biocidal and Cleaning Products for Cleanrooms

"Customer service is excellent and I always receive a swift response from one of the team. Should I request a price - I am then provided with information regarding any costs and an estimated delivery date. Once an order is placed, it is always on time. Any queries are quickly resolved. It is a pleasure doing business with Cherwell - it really feels like you care about the customer."

Kieran Broadbridge, Senior Project Leader


"Hassle free. Quality product. Minimal QC issues with good communication when they do occur."

Quality Manager

BioDivide Ltd

"Great customer service and always keeping our company informed of changes particularly concerning regulatory matters that could impact us. Helpful, friendly, efficient."

Technical and Regulatory Affairs Manager

Cleaning Products Supplier

"Thank you! Once again – great service! Goods received within 2 days of ordering and all packaging intact, CoAs received same day."

National Blood Service


"Your service has always been very good, as well as your documentation. Quite a lot of companies you have to chase these days for deliveries and certificates. You always send them promptly."

Julie Bowden, QA Releasing Officer

Pharmacy Manufacturing Unit, Portsmouth

"Friendly, helpful, efficient. Always get a prompt reply to any query. Always feel like a valued customer. Definitely feel like the company cares about it's customers and respects the industry we work in."

Simon Phillips, Head of Sterile Manufacturing

Nova Laboratories Ltd

"We urgently needed TSB in bottles with a septum, overwrapped and terminally sterilised and in large quantities. Working closely with Cherwell, who provided excellent communication throughout, we were able to meet the time frames for our media fill validation."

Tracey Roberts, Quality Assurance Technician

Wrexham Maelor Hospital

"Cherwell have always provided a great service, with innovative ideas and products. Great customer service too."

Gerald Prout

Kennet Bioservices Limited

"All my contacts with Cherwell have been resolved satisfactorily with 24-48 hours."

Karen Salisbury, Healthcare Scientist

Wrexham Maelor Hospital

"Cherwell provide very efficient service, communication and good product choice."

Jane Maffei, Lead Technician in Aseptic Services

Worcestershire Royal Hospital

"Cherwell are reliable, adaptable, and nothing is to much trouble, excellent customer services. Friendly and helpful."

Head Microbiologist

North Tees and Hartlepool NHS Trust

"Thanks Emma – and all for your help. This does serve to back up the reason we have had such good relations with Cherwell for so many years. Proactive holistic bigger picture thinking."

Louisa Blake, Senior Pharmacy Technician QA/QC

Salisbury District Hospital

"You provide us with an amazing flexible service.  Although you are a growing firm you still have the customer service of a dedicated provider! Thanks."

Facilities Coordinator

Roslin Cell Therapies Limited

"Cherwell provide a quick response, very good cooperation and availability, with precise service, high quality reports and overall performance."


Asked Questions

What does the use by date mean on Redipor® prepared media?

For Redipor media the Use By date is the last day on which the medium should be inoculated or exposed. Any incubation period that is normal for that product may begin on that day. For example a 14 day sterility test in TSB or a 5 day incubation for a TSA settle plate.

Are there any benefits to dip slides?

Dip slides can be less sensitive than contact plates or swabs and they often have less stringent QC release criteria. However there are circumstances where they have real advantages.

They are convenient and easy to use by the relatively less skilled.
They are ideal for testing water tanks and hygiene monitoring in food preparation and similarly clean but not aseptic environments. Most importantly they are ideal for field use because they are self contained and the slide can be incubated and assessed without opening the device.

We need a specific or bespoke media type. Can Cherwell help?

Our Redipor Prepared Media range is so extensive that not every product is included in the official price list. In addition to offering such a wide selection of products, we have developed a flexible manufacturing process enabling us to produce bespoke solutions.

Find out more information here.

Contact us to discuss your requirements, whatever they are.

What is the maximum exposure time for settle plates?

Settle plates are used to monitor the level of viable particles in the environment through a process of passive air sampling. A viable particle settles on agar plates at a rate dependent on its characteristics and the airflow in the environment.

EU GMP Guide Annex 1 has recommended that 90mm settle plates can be exposed in cleanroom environments for up to 4 hours. However, agar plates may dry out during long exposures where the rate of air exchange is high. So, it might be necessary to use deep filled settle plates, or replace the settle plate after a shorter time to ensure satisfactory growth promotion after exposure.

Do I need to store my prepared media in the fridge?

The majority of our prepared media can be stored in ambient conditions, not exceeding 25ºC. There are only a small number of very specialist products that require different storage conditions.

We have never specified refrigeration as a storage condition for our general media as this causes excess condensation and can result in very wet agar, rendering it impossible to use.

View our data sheet on Redipor Storage Conditions.

Can I recycle Redipor product packaging?

View our data sheet on recycling Redipor products.


Supplying products is only the start


The best products prepared for you

Our Redipor® media products are batch tested, QC certified and delivered when you need them


Bespoke accessories and services

We provide additional equipment or services to make your environmental monitoring more effective


Best customer service

We build long-standing client relationships on understanding, commitment and trust



The Pharmaceutical and Cleanroom Industry's Guide to Prepared Culture Media

A guide to understanding the logistics, best practices and breadth of available prepared media options for varying applications.


Download Guide