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ATP testing detects the presence of residual ATP. Since ATP comes from living cells and organic matter, its presence or absence indicates whether the surface is clean. They’re also useful indicators of broader microbial risks, including conditions associated with Listeria and Salmonella.

Follow these steps to use an ATP Test swab and luminometer:

1. Pull the handle out of the swab, avoiding contact with the foam tip.
2. For a flat surface, lightly press the swab across a 4-inch by 4-inch area of the testing surface. Move the swab back and forth while rotating it.
3. For a non-flat surface, standardize a consistent surface area to swab while considering the internal and external areas (i.e., pipes). Rotate the swab tip 360°.
4. For a liquid sample, swirl the swab tip for 5 seconds in the water source – either free-flowing or sampled in a sterile container.
5. Insert the swab back into the handle. Twist the swab down to activate it, then keep the swab in a vertical position.
6. Shake the swab from side to side while keeping it upright until the white tablet dissolves.
7. Insert the swab into the luminometer and press the “Run Test” button. The luminometer will provide results in seconds.

ATP testing is highly accurate as an early indicator of biological contamination. ��������Vlog’ ATP tests reliably pick up the following organic sources at lower levels than similar tests:

• Living cells
• Dead cells
• Biofilms
• Foods
• Plant and animal cells
• Bodily fluids
• Organic soils

Charm has developed scientifically advanced swab chemistry for effective sanitation. Charm utilizes a PMT, while other systems use a photodiode to detect light produced by the ATP reaction.

The distinction between a PMT and photodiode lies in their light detection and amplification mechanisms. PMTs are vacuum tube devices that amplify even the slightest signal to detect the lowest level of contamination, whereas photodiodes do not. The amplified signal enhances the instrument’s overall sensitivity, making PMTs particularly advantageous when detecting faint bioluminescence is essential.

In contrast, photodiodes may be suitable for less demanding applications where the emphasis is on simplicity and cost-effectiveness rather than sensitivity and signal amplification.

The combination of Charm’s patented ATP swab design and built-in shutter keeps external light out, so the PMT reads only the light from the bioluminescent reaction. Additionally, each Charm luminometer uses a rechargeable Li-Ion for portability, durability (i.e., longer life compared to AA batteries), convenience, and environmental considerations.