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SECTION 5
5.1 Description
WARNING
Do not use the Hach Flow Cells
with flammable samples or those
containing hydrocarbons, solvents,
concentrated acids or concentrated
bases that may attack wetted parts
of the cells. Conduct tests prior to
use of Flow Cells if sample
compatibility is questionable.
USING FLOW-CELL SYSTEM APPARATUS
Three optional Flow-Cell kits are available for the 2100AN Laboratory
Turbidimeter. Two kits exist for low pressure applications [< 34 kPa (5psig)] and
one kit for high pressure applications [< 414 kPa (60 psig)]
Flow-Cell advantages:
•
Increases speed of measurement
•
Provides a single cell for all measurements (thus assuring a constant
optical path)
•
Eliminates the need for matched cells
•
Minimizes the amount of glassware that must be purchased, stored and
cleaned
A constant optical path is the most important benefit of a Flow Cell. Variability,
inherent flaws and scratches in sample-cell glass can cause significant errors in
low-level optical measurements such as turbidity, color, transmittance and
absorbance. Hach recommends using a Flow-Cell Assembly for low-level
turbidity measurements. A Flow Cell is required to achieve the published accuracy
and reproducibility specifications in color, absorbance or transmittance
measurement modes.
ATTENTION
Ne pas utiliser les cuves à circulation Hach avec des échantillons inflammables ou ceux
contenant des hydrocarbures, solvants, acides concentrés ou bases concentrées qui
peuvent attaquer les parties au contact du liquide. Effectuer des essais avant
l'utilisation des cuves à circulation si la compatibilité de l'échantillon est douteuse.
ADVERTENCIA
No use las Células de Flujo Flow Cells de Hach con muestras inflamables o que
contengan hidtocarburos, soventes, ácidos concentrados o bases concentradas que
puedan atacar las partes mojables de la célula. Experimente antes de usat las Células de
Flujo, si existe duda sobre la compatibilidad de la muestra
WARNHINWEIS
Durchflußküvetten von Hach düfen nicht in Verbindung mit brennbaren Proben oder
Proben, die Kohlenwasserstoffe, Lösemittel, konzentrierte Säuren oder konzentrierte
Basen, die die benetzten Teile der Küvetten angreifen können, verwendet werden. Wenn
die Verträglichkeit fraglich ist, sollten vor der Verwendung der Durchflußküvetten Tests
durchgeführt werden.
AVISO
Não se deverá usar Celas de Fluxo hach con amostras inflamáveis ou aquelas que
contêm hidrocarbonetos, solventes, ácidos concentrados ou bases concentradas que
podem atacar as partes molhadas das celas. Realize os testes antes do uso das Celas de
Fluxo se é questionável a compatibilidade das amostras.
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