EPA Calibration Protocol

 

Model GFC7001E Carbon Dioxide Analyzer

 

 

Table 10-1: Matrix for Calibration Equipment & Supplies

 

 

 

 

 

 

 

 

EQUIPMENT &

 

 

 

ACTION IF

 

 

SPECIFICATION

 

REFERENCE

REQUIREMENTS ARE NOT

 

 

SUPPLIES

 

 

 

 

 

 

MET

 

 

 

 

 

 

 

 

 

Compatible with output

 

 

 

 

 

Recorder

signal of analyzer; min.

 

 

Return equipment to supplier

 

 

chart width of 150 mm (6 in)

 

 

 

 

 

 

 

 

 

is recommended

 

 

 

 

 

 

 

 

 

 

 

 

Sample line and

Constructed of PTFE or

 

Check upon receipt

Return equipment to supplier

 

 

manifold

glass

 

 

 

 

 

 

 

 

Calibration equipment

Q.A. Handbook1

Vol II Part 1 , App 15,

Return equipment/ supplies

 

 

Sec. 4.4 & 5.4

to supplier or take corrective

 

 

 

action

 

 

 

 

 

 

 

 

 

Noise = 0.5 ppm

 

 

Instruments designated as

 

 

Detection limit

 

 

reference or equivalent have

 

 

Lower detectable

 

40 CFR, Pt 53.20 & 232

 

 

 

been determined to meet

 

 

 

limit=1.0 ppm

 

 

these acceptance criteria.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Working standard CO

 

 

Analyzed against NIST-SRM;

Obtain new working

 

 

Traceable to NIST-SRM

 

40 CFR, Pt 50, App C; para.

standard and check for

 

 

cylinder gas

 

 

 

 

 

3.13

traceability

 

 

 

Clean dry ambient air, free

 

40 CFR, Pt 50, 3App C; para.

 

 

 

Zero air

of contaminants that cause

 

Obtain air from another

 

 

 

detectable response with

 

3.2

source or regenerate.

 

 

 

the CO analyzer.

 

 

 

 

 

Record form

Q.A. Handbook1

Vol II Part 1 , App 15,

Revise forms as appropriate

 

 

Table A-5 & A-6

 

 

 

 

 

 

Audit equipment

Must not be the same as

 

Q.A. Handbook1 Vol II Part 1 ,

Locate problem and correct

 

 

used for calibration

 

App 15,

or return to supplier

 

 

 

 

Sec. 4.4 & 5.4

 

 

 

 

 

 

 

10.1.3.RECOMMENDED STANDARDS FOR ESTABLISHING TRACEABILITY

To assure data of desired quality, two considerations are essential:

The measurement process must be in statistical control at the time of the measurement.

The systematic errors, when combined with the random variation in the measurement process, must result in a suitably small uncertainty.

Evidence of good quality data includes documentation of the quality control checks and the independent audits of the measurement process by recording data on specific forms or on a quality control chart and by using materials, instruments, and measurement procedures that can be traced to appropriate standards of reference.

To establish traceability, data must be obtained routinely by repeat measurements of standard reference samples (primary, secondary and/or working standards). More specifically, working calibration standards must be traceable to standards of higher accuracy, such as those listed in Table 3-7.

Cylinders of working gas traceable to NIST-SRMs (called EPA Protocol Calibration Gas) are also commercially available (from sources such as Scott Specialty Gases, etc.). See Table 3-7 for a list of appropriate SRMs.

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Teledyne GFC 7001E Recommended Standards for Establishing Traceability, Matrix for Calibration Equipment & Supplies