Hach ANATEL PAT700 User Manual - 1.10 Symbols and Marks
Page 11
Before you begin
1.10 Symbols and marks
The PAT700 Total Organic Carbon Analyzer complies with those parts of 21 CFR, Part 11
concerning the collection, retention, access and retrieval of data as electronic records.
The instrument uses no electronic signature(s), thus those parts of the rule referring to
electronic signature(s) are not applicable. Extensively documented and verifiable tests
have been conducted to establish 21 CFR, Part 11 compliance.
The PAT700 Total Organic Carbon Analyzer is comprised of a line of precision
instruments which meet or exceed the following international requirements and standards
of compliance:
1.11 Patents
Apparatus and products are manufactured and sold by HACH Company, Inc. under one
or more of the following U.S. patents: 5,260,663 and 5,334,940 and equivalents in other
countries where issued. Purchaser is granted a paid-up, non-exclusive license to practice
under these patents for the useful life of this apparatus or product.
1.12 Definitions of terms
The following terms are used throughout this manual:
Conductivity. A measure of the ability to conduct current through water. Conductivity,
very low with high-purity deionized water, is the reciprocal of resistivity and is measured
in microsiemens per centimeter (µS/cm).
Megohm (M). A measurement of 1,000,000 ohms.
Microsiemens (µS). A unit of conductance in the metric system equivalent to one
millionth of an ampere per volt (1 µS = 1 x 10
-6
A/V).
Normalize. To make conform to a standard. In this case, the user performs calculations
on the raw data to produce a result in a standard unit of measure.
Organic. A molecule that contains carbon but excludes carbonate CO
2
, CO, CS
2
, or
cyanide-related compounds. Oxygen is very common in organics, and they almost
always include hydrogen.
Oxidation. The loss of electrons by a chemical species, typically with oxygen. Organic
carbon, for example, oxidizes to carbon dioxide and water.
Parts per billion (ppb). A term used to report trace chemical analyses. It refers to the
concentration of the element or compound present within one billion parts of water. One
microgram per liter (µg/L) is equal to 1 ppb).
European Conformity Mark
When applied to a product, indicates that the product complies with all
required directives and standards.
UL61010-1 and CAN/CSA C22.2 No. 61010-1
Safety Requirements for Electrical Equipment for Measurement,
Control and Laboratory Use, Part 1: General Requirements.
ISO
Customer satisfaction through continuous quality improvements.