COMPETITIVE COMPARISON
Simpltek Vs. Paddle Testers
SPEED
Paddle Testers - Presence/Absence in 24 hours, Limited Range
Quantity 48-72 Hours.
Simpltek -Presence/Absence in 24 Hours. Quantification
2-12 Hours.
For high microbe counts (potentially dangerous conditions) Simpltek
is 10 - 20 times faster. Want to drink the water,
eat the food, go swimming? Test time is critical because bacteria
can grow rapidly to staggering levels slow paddle testers take
so long that their results may no longer represent actual conditions.
SAFETY
Paddle Testers - Test media and microbes are exposed
to open air during sampling, making it possible for contaminants
to become airborne and spread throughout the environment.
Simpltek - Test media and microbes are completely sealed
from human contact unless the ampoule is smashed. Glass can cut
but preinstalled protective shield provides a safety barrier
during snapping procedure.
EASE OF OPERATION
Paddle Testers - Operator is required to dose sample
and interpret a colony pattern without allowing chemical or biological
contamination of the test. Don't sneeze, cough or touch the paddle
sampler when testing! An error is easily undetected and can report
a false result.
Simpltek - Just snap the ampoule and detect a color change.
No chance of contamination of sample or operator error if the
ampoule is snapped according to instructions.
ACCURACY
Paddle Testers - The test is subject to the effects
of humidity and operator error. Test sample is only approximately
1 ml and the results approximately 10 to the 6.
Simpltek - Minimal chance of operator error. Sample size
is 7.5 ml and the test range is quantifiable from 0 - 10 to the
8.
SHELF LIFE
Paddle Testers - Commonly 1 year in a dry but not
freezing environment.
Simpltek - 4 years plus. Dry, wet, warm or freezing, it
doesn't matter.
TEST CONFIRMATION
Paddle Testers - Once the test is run, the sample
evaporates and there is no way to confirm the results via lab
testing..
Simpltek - Test ampoules retain 7.5 ml of sample and
matrix, thus creating an audit trail which can be used for lab
testing if necessary. Both chemical and biological confirmations
can be run. Additionally, it microbes are found a subsequent
lab analysis can identify microbe species to determine if toxic
conditions exist.
METHOD APPROVAL & CERTIFICATION
Paddle Testers - NONE
Simpltek - Total Microbes 5/31/99 - ASTM, Coliform &
E-coIi - AOAC pending 6/99
TEST FLEXIBILITY
Paddle testers - Primarily set-up for liquid samples.
Simpltek - Applications include, liquids, surfaces, soils
and foods.
TESTING OPTIONS
Paddle Testers - Coliforms.
Simpltek - Total Microbes, Coliforms, E-coli and
various Chemical tests.
OTHER
Paddle testers - Reads microbial presence.
Simpltek - Reads presence AND activity. Simpltek has
the advantage of giving fewer false positive results. Treated,
inactive microbes are not counted. Example: drinking water treated
with chlorine will kill or depilate coliforms. Paddle testers
remove the inactive coliform from its environment, revives it
and counts it as a problem when it is not. Simpltek identifies
only the ones which are untreated and toxin capable.
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