Technical information, Overview, Test operating limits – Nova-Tech Orbeco-Hellige Legionella Systems Test Kit User Manual

Page 2: Disposal, Storage, Limit of detection

Advertising
background image

Overview

The Legionella Systems Test Kit is for detecting Legionella in a water sample -- it is ideal for on-line and a variety
of industrial applications.

The test operates via a Lateral Flow Immuno-Chromatographic Assay (LFICA).

Each Systems Test Kit contains the following:

• 5 Individually foil -wrapped tests -- each contains an exact volume pipette

• 5 Hollow Fiber Filters

• 5 Syringes with Recovery Buffer

• 1 Sample Collection Bottle

• 1 Sample point pipe adapter

• Instructions for use

This test is intended for analysis of water samples only. This product is not intended for clinical or medical
diagnostic use.

The product is intended to be used as part of an overall water treatment, management, and risk reduction ap-
proach and should NOT be used as the sole method for assessing risks associated with Legionella bacteria.

Test Operating Limits

The test has been evaluated for operation between 10-40ºC (50-104ºF).

The test has been validated for samples that filter in less than 10 minutes. Samples requiring more than 10 min-
utes to filter may give erroneous results. Samples that require long times to sample may be indicative of poor
system maintenance. A wide range of non-oxidizing biocides and biodispersants have been checked for cross
reaction and inference with the test. This test should not be used on systems treated with biguanide or
THPS based biocides!

Performance of the test with samples other than those taken from Cooling Towers, Domestic Hot & Cold water
systems and Whirlpool spas has not been established.

Disposal

The test, filter, syringe and caps cannot be reused or recycled. The packaging materials and this instruction
manual can be recycled.

Storage

The test is intended for storage at room temperature. Do Not Freeze. When stored correctly, the test will
continue to operate within design specifications, until the specified expiration date. Do not use the test after
the stated expiration date specified on the packaging, Do not use any test where the foil packaging
is damaged.

Technical Information

Limit of Detection

Laboratory analysis has demonstrated that 98-100% (91% Cl) of tests are positive for clean water samples
containing 100 CFU/Liter Legionella pneumophila serogroup 1. The theoretical mathematical limit of detec-
tion of the test is equivalent 100 CFU/L when a 250 ml sample is filtered. If smaller volumes are processed, the
detection limit will be altered accordingly:

Suspended solid content in the water samples impacts filtration and test performance, including analytical sen-
sitivity. Acutual results will vary. Water samples with high levels of suspened solids may block filtration entirely.
Legionella pneumophila serogroup 1 bacteria recovery from water samples can range from <10 to 100%,
depending on water sample composition. This is similar to filtration concentration techniquest used in other
microbiological analysis methods.

limit of detection =

100 CFU

Sample Volume (L)

Advertising