has been the leader in automated liquid
sampling for over 40 years!
sample probe allows accurate samples in a wide variety
of environments. Click
on image to enlarge
sample probe for reactive environments. Other customizations
are available. Click
on image to enlarge
installed without tools, using 1/4-turn fasteners.
from pressurized lines.
initial velocity than peristaltic and vacuum type samplers.
lift exceeding 40’ — customized lift to 80’.
Design for long term, trouble-Free operation.
Automatic samplers meet ASTM D3370-76, Page 29.1, Recommended methods
for proper sampling.
Automatic samplers carry a “Two Year Warranty” on parts
are available as NEMA I, NEMA IV and NEMA XII. Other styles available
to meet your individual specification or requirements.
do not use suction as used by peristaltic or vacuum type samplers as
this concept changes the solubility of the liquid by disturbing the
gas/liquid balance. For this reason, suction type samplers should not
be used when measurements to be made concern dissolved gases such as
oxygen or carbon dioxide.
Made in Honey Brook, Pennsylvania.
ventilated and heated cabinets with control thermostats.
advice is always available.
The ASTM addresses "taking the sample" with this statement... "Because pumps employing suction principles disturb the gas-liquid
balance, use a submersible-type pump for pumping samples from open bodies
of water whenever the measurements to be made concern dissolved gases
such as oxygen or carbon dioxide.
(ASTM D3370-76 P 29.1)
All BVS liquid samplers utilize the flooded-suction concept of operation.
With the sampling probe or pump submerged in the liquid to be sampled,
liquid enters the sampling device by gravity, thereby giving a true representative
sample of the liquid at that particular strata. The use of peristaltic
or vacuum pumps, the suction concept of operation, does not give a true
representative sample of the liquid that is being sampled. The use of
suction changes the solubility of the sample by changing the gas/liquid
balance. This change in solubility makes it impossible to get accurate
measurements of dissolved gases.