|
TECHNICAL
DATA FWT RED
|
|
Bright
Dyes
FWT
Red
liquid products
are
specially
formulated
versions
of Rhodamine
WT dye
for
convenient
use
in water
tracing
and
leak
detection
studies.
This
bright,
fluorescent
red
dye
is certified
by NSF
International
to ANSI/NSF
Standard
60 for
use
in drinking
water.
It may
be detected
visually,
by ultraviolet
light
and
by appropriate
fluorometric
equipment.
Today
it is
most
often
used
visually.
Visually
the
dye
appears
bright
pink
to red,
depending
on its
concentration
and
under
ultraviolet
light
as bright
orange.
The
dye
is resistant
to absorption
on most
suspended
mater
in fresh
and
salt
water.
Compared
to Bright
Dyes
FLT
Yellow/Green
products
it is
significantly
more
resistant
to degradation
by sunlight
and
when
used
in fluorometry,
stands
out
much
more
clearly
against
background
fluorescence.
As always
the
use
and
suitability
of these
products
for
any
specific
application
should
be evaluated
by a
qualified
hydrologist
or other
industry
professional.
|
General
Properties
|
Tablets
|
FWT
Red 25 Liquid
|
Powders
|
|
Detectability
of active ingredient 1
|
Visual <100
ppb
|
Visual <100
ppb
|
Visual <100
ppb
|
|
Maximum
absorbance wavelength 2
|
550/588
nm
|
550/588
nm
|
550/588
nm
|
|
Appearance
|
Dark
red convex 1.6cm diameter
|
Clear,
dark red aqueous solution
|
Dark
red fine powder
|
|
NSF,
max use levels in potable
water
|
0.3
ppb
|
0.8
ppb
|
0.1
ppb
|
|
Weight
|
1.05
gms + 0.05
|
n/a
|
n/a
|
|
Dissolution
Time 3
|
50% < 3
minutes
95% < 6
minutes
|
Immediately
|
50% < 3
minutes
95% < 6
minutes
|
|
Specific
Gravity
|
n/a
|
1.03
+ 0.05 @ 25¡ C
|
n/a
|
|
Viscosity
4
|
n/a
|
1.8
cps
|
n/a
|
|
pH
|
n/a
|
8.7
+ 0.5 @ 25¡ C
|
n/a
|
|
Coverage
of Products
|
One
Tablet
|
One
Pint Liquid (FWT
Red 25)
|
One
Pound Powder
|
|
Light
Visual (100 ppb)
|
604
gallons
|
31,250
gallons
|
604,000
gallons
|
|
Strong
Visual (1 ppm)
|
60
gallons
|
3,125
gallons
|
60,400
gallons
|
Caution:
These
products
may
cause
irritation
and/or
staining
if allowed
to come
in contact
wit
the
skin.
The
use
of gloves
and
goggles
is recommended
when
handling
this
product,
as with
any
other
dye
or chemical.
To
our
best
knowledge
the
information
and
recommendations
contained
herein
are
accurate
and
reliable.
However,
this
information
and
our
recommendations
are
furnished
without
warranty,
representation,
inducement,
or license
of any
kind,
including,
but
not
limited
to the
implied
warranties
and
fitness
for
a particular
use
or purpose.
Customers
are
encouraged
to conduct
their
own
tests
and
to read
the
material
safety
data
sheet
carefully
before
using.