Hardy Diagnostics DiluLok™ Butterfield’s Phosphate Buffer, 90 mL, provides a ready-to-use, sterile diluent for use in microbiological testing, including plate count assays, rinse sampling, and microbial enumeration in food, dairy, pharmaceutical, and environmental laboratories.

Butterfield’s Phosphate Buffer is an industry-standard diluent formulated to maintain the osmotic balance and viability of microorganisms during dilution and testing procedures. The DiluLok™ system combines this trusted buffer formulation with an advanced leak-resistant, pre-filled bottle design, saving labs time, labor, and material costs associated with in-house media preparation.

Each sterile bottle features a 45 mm wide-mouth opening for easy pipetting, a flip-top hinged lid for one-handed operation, and clear volume markings for 90 mL and 99 mL. Bottles are manufactured from clarified polypropylene for crystal-clear visibility and are tested for pH, fill accuracy, sterility, and microbial performance.

Features and Benefits:
• Sterile, ready-to-use Butterfield’s Phosphate Buffer for microbial testing
• Meets standard testing requirements for food, dairy, and environmental industries
• 45 mm wide-mouth bottle accommodates large or complex samples
• Flip-top lid enables one-handed use for efficient pipetting
• Leak-resistant design ensures sample integrity during handling and transport
• Clearly marked 90 mL and 99 mL fill lines for precise measurement
• Clarified polypropylene for optical clarity and easy labeling
• Tamper-evident shrink seal for guaranteed sterility
• Lot-tested for pH, sterility, fill volume, and microbial recovery
• Eliminates in-house media prep—saving time and reducing risk of contamination