Hardy Diagnostics DiluLok™ Butterfield’s Phosphate Buffer, 99 mL, provides a ready-to-use, sterile diluent designed for microbial testing, rinse sampling, and plate count procedures in food, beverage, environmental, and pharmaceutical laboratories.

Butterfield’s Phosphate Buffer is widely recognized as a standard diluent for microbiological applications, maintaining osmotic balance and supporting microbial viability during sample preparation. The DiluLok™ design simplifies testing workflows by combining this trusted buffer formulation with a pre-filled, leak-resistant bottle, eliminating the need for in-house preparation and quality checks.

Each 99 mL vial features a hinged flip-top lid for one-handed operation, a wide 45 mm mouth for easy pipetting, and clearly marked fill lines for accuracy. The bottles are constructed from clarified polypropylene for durability and visibility, with each lot tested for pH, sterility, fill accuracy, and microbial recovery performance.

Features and Benefits:
• Sterile, ready-to-use Butterfield’s Phosphate Buffer for microbial and rinse testing
• Meets industry standards for food, water, and pharmaceutical quality control
• Wide 45 mm opening accommodates a variety of sample sizes
• Flip-top lid enables smooth, one-handed pipetting and closure
• Leak-resistant design ensures sample integrity during transport and storage
• Clarified polypropylene construction for strength and clarity
• 90 mL and 99 mL fill lines for easy visual reference
• Tamper-evident shrink seal maintains sterility and traceability
• Each lot tested for sterility, pH, fill volume, and microbial performance
• Reduces labor costs and eliminates prep time for dilution media