详情
Water quality test - COD Test
Tube
1.
Specification
Product Name: COD Test
Tube
Model: LH-B*1
Type:
semi-quantitative
Color reaction: purple- dark
yellow
Gradation: ****************7mg/L
Other range:
******************0mg/L
Packing: *0pcs/box
Shelf life: at least 1.5
year
2.
Instructions
1. Pull out the filament of
tube,
2. Evict the air.
3. Insert the testing liquid,
stop inhaling water when it is half around.
4. Rock 5 to 6 times slightly,
after the specified time (please rock 1 to 2 times in the halfway),
compared with the standard colorimetric card.
Notes:
1). PH of the testing liquid must be
>5.
2). It’s normal sediment shown in the tube
while testing.
3.
Feature:
1. Convenient: small size and
light weight.
2. Fast: **5minutes per
sample.
3. Precise: development depends
on standard method.
4. Simple operation: no need
extra material or instrument, easy to operate
5. Sealed by Aluminum foil,
long shelf life.
4. Background of development
Inenvironmental
chemistry, the
chemical oxygen demand (COD) test is commonly used to indirectly
measure the amount oforganic
compounds inwater.
Most applications of COD determine the amount oforganicpollutants
found insurface
water (e.g.lakes
andrivers)
orwastewater,
making COD a useful measure ofwater
quality. It is
expressed in milligrams per liter (mg/L)
also referred to as ppm (parts per million), which indicates
themass
of oxygen consumed per liter
ofsolution.
5. Other relevant
products
COD test tube
LH-B*1
Cyanide (free) test tube
LH-B*2
Zinc ion test tube
LH-B*3
Ozone in liquid test tube
LH-B*4
Cadmium ion test tube
LH-B*5
Soft water hardness test tube
LH-B*6
Nitrate test tube
LH-B*7
Ammonium test tube
LH-B*8
Nitrite test tube
LH-B*9
Formaldehyde in liquid test
tube LH-B*0
Hydrogen peroxide test tube
LH-B*1
Peroxyacetic acid test tube
LH-B*2
Phosphate test tube
LH-B*3
Nickel ion test tube
LH-B*4
Chromate test tube
LH-B*5
Total Chromium test tube
LH-B*6
Lead ion test tube
LH-B*7
