Hardy Diagnostics LokTight™ Tryptic Soy Agar (TSA) with Lecithin and Tween®, USP, Irradiated, Triple-Bagged is a validated, ready-to-use contact plate engineered for environmental surface monitoring in aseptic cleanroom environments and other biologically controlled areas.

Each Rodac™-style contact plate is gamma irradiated to achieve a Sterility Assurance Level (SAL) of 10⁻⁶, ensuring the highest standard of sterility for critical control zones. The triple-bagged packaging system—consisting of two transparent PET outer layers and a breathable inner barrier—supports sterile transfer through multiple cleanroom zones without compromising integrity.

The TSA formulation with Lecithin and Tween® 80 neutralizes common disinfectant residues, enabling accurate recovery of viable microorganisms from sanitized surfaces. The LokTight™ locking lid prevents contamination and lid displacement during sampling and transport, while the molded counting grid simplifies colony enumeration.

Features and Benefits:
• Triple-bagged system – supports sterile transfer through multiple cleanroom zones
• Gamma-irradiated sterility – validated for SAL 10⁻⁶
• Lecithin and Tween® 80 formulation – neutralizes disinfectants for reliable microbial recovery
• LokTight™ locking lid – prevents accidental opening during sampling and transport
• Molded counting grid – aids accurate colony enumeration
• Room-temperature storage – no refrigeration required
• Certificate of Analysis – accessible online for full traceability and compliance
• USP-compliant – ideal for pharmaceutical, biotech, and aseptic processing environments

Simple 3-Step Use:
1️⃣ Remove lid.
2️⃣ Gently press plate to surface—avoid twisting or sliding.
3️⃣ Twist lid clockwise until frosted bands align to lock securely.