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Do not use unapproved materials (brass, copper, carbon steel, rubber,
etc.) for transfer or storage systems.
Caps on the reagent bottles are made with a special porous liner that
allows venting of gas. The venting cap always must be used on the
bottle of hydrogen peroxide. As a precaution, the reagent bottles are
shipped in a plastic bag. If there is evidence of leakage during shipment,
wear gloves when removing the bottle from the bag and rinse the bottle
with water when removed from the bag. Rinse the bag before disposal.
APPLICATION-SPECIFIC MANUALS
Operating procedures for the Digesdahl Digestion Apparatus vary
according to the type and form of the sample and have been published in
a series of procedure manuals dedicated to specific applications. They
are available on request and provide the analyst with step-by step
instructions for sample digestion and subsequent analysis of specific
parameters. Specific setup and operating information is given in the
Digesdahl Digestion Apparatus instruction manual, included with each
Digesdahl. Application-specific manuals available include:
Literature Code Title
3120 Systems for Food, Feed and Beverage Analysis
3201 Fluid Fertilizer Analysis Manual
8353 Water Analysis Handbook
To receive a free copy of these manuals, contact Hach Customer
Services and request by literature code number.
DISTILLATION
Distillation is an effective way of separating chemical components for
analysis. The Hach Distillation Apparatus (see Figure 14) is adapted
easily for a variety of test needs. Sample distillations are easy and safe to
perform. It is suitable for water and wastewater requiring sample
distillation pretreatment. Applications for the General Purpose
Apparatus include: fluoride, albuminoid nitrogen, ammonia nitrogen,
phenols, selenium and volatile acids. Arsenic and cyanide require
specialty glassware sets in addition to the General Purpose Set. These
sets are the Arsenic Distillation Apparatus and the Cyanide Distillation
Apparatus. All connecting glassware is manufactured with threaded
connectors for ease and safety. The General Purpose Heater and Support
Apparatus provide efficient heating and anchoring of the glassware.
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