Sterilized Pre-Filled Dilution Bottles:

Weber pre-filled dilution bottles are used to dilute a liquid or particulate sample for the purpose of microbial enumeration on Petri plates.  Our sterile buffers are manufactured per Standard Methods for the Examination of Dairy Products and Standard Methods for the Examination of Water and Wastewater.  This provides an industry standard that is readily accepted by applicable regulatory agencies.

Each bottle is pre-filled to either 99 or 90 mL, buffered to pH 7.2 +0.2, has an overall capacity of 150 mL and is 100% recyclable.  Two formulations are available:

Butterfield’s Buffer is frequently used in the food and dairy industries (APHA, FDA, AOAC or USP methods). Contains purified water, monobasic potassium phosphate and sodium hydroxide for pH adjust­ment.

Phosphate Buffer is the same as Butterfield’s Buffer but also contains magnesium.  This is commonly used in the water and wastewater industries (APHA or EPA methods). Contains magnesium chloride, monobasic potassium phosphate and sodium hydroxide for pH adjustment.

Applications for Butterfield and Phosphate Buffers:

• Foods & Beverages
• Water and Wastewater
• Cosmetics
• Pharmaceuticals
• Environmental Samples

Sterilized Pre-Filled 9 mL Dilution Tubes:

We also manufacture sterile pre-filled dilution Tubes available in Butterfield’s Buffer.  These tubes are pre-filled to 9 mL and have an overall capacity of 13 mL.  This provides an advantage in working with smaller volumes in a smaller footprint.

Features & Advantages of Dilution Bottles:

Request a Certificate of Analysis (CoA) online

This product is made in strict compliance with specifications as published in the most recent edition of APHA Standard Methods for the Examination of Dairy Products; APHA Standard Methods for the Examination of Water and Wastewater; APHA Compendium of Methods for the Microbiological Examination of Foods: FDA Bacteriological Analytical Manual; FDA Milk Laboratory Evaluation Form 2400; United States Pharmacopoeia. Each lot is thoroughly tested in house with toxicity done by an independent testing laboratory and is released only after passing all specifications for pH, sterility, toxicity, fill volume, and package integrity and markings. The CoA indicates that each lot passes all of these specifications. Specific results are given for pH and toxicity analysis.

Click here to obtain a copy of the Certificate of Analysis (CoA).

Would you like to evaluate a free sample?

A free case of Weber Dilution Bottles or Dilution Tubes are available! Please let us know which product you would like to evaluate when making your request.

Huge freight savings and faster delivery throughout the United States

Dilution bottles ship out of our Nevada warehouse for delivery to Western states and out of our Missouri warehouse for selected Southern and Midwestern states. Customers in these areas will realize significant freight savings plus shipments will be received sooner.

Eastern states will continue to receive fast and economical service from our facility in New Jersey.

Products identified by this icon indicate only the first case — of multiple case orders — will be upgraded to UPS 3 Day Select service (where applicable). The remaining cases will ship by ground and you should receive them within 1 - 3 days of receiving your first case.