The laboratory must:
Each laboratory must appoint a laboratory technical director. The laboratory technical director is responsible for the technical and scientific oversight of all laboratory activities. The laboratory technical director must certify that personnel with appropriate education and technical background perform all tests for which the laboratory is accredited. Each laboratory will be accredited only after presentation of documentation to the MLAP regarding education and work experience.
Laboratory management must:
The laboratory management must:
The laboratory management must:
Laboratory management must:
All investigations resulting from data integrity issues are to be conducted in a confidential manner until they have been completed. These investigations must be documented, as well as any notifications in writing made to clients receiving any affected data, within 30 calendar days of investigation completion. This written notification must include a time frame for re-issuing affected laboratory reports and associated electronic database deliverables (EDDs), if applicable. A copy of each written notification must be provided to the accreditation officer within seven calendar days of submission to affected clients.
The laboratory must establish a corrective action policy and procedure and must designate appropriate authorities for implementing corrective action when nonconforming work or departures from the policies and procedures in the management system or technical operations have been identified.
The laboratory must monitor the results to ensure that the corrective actions taken have been effective.
Where the identification of nonconformities or departures casts doubt on the laboratory's compliance with its own policies and procedures, or on its compliance with this rule, the laboratory must ensure that the appropriate areas of activity are audited. Such additional audits often follow the implementation of the corrective actions to confirm their effectiveness. An additional audit is necessary when a serious issue or risk to the business is identified.
After the initial demonstration of capability has been completed, the laboratory is required to continue demonstrating method performance through one of the following:
The following information must be verified and the results documented:
Legal chain of custody protocols are used for evidentiary or legal purposes. A laboratory must have a written SOP that describes the protocols for carrying out legal chain of custody if a client specifies that the sample is to be used for evidentiary purposes.
Test | Monitoring Frequency | Maximum Acceptable Limit |
Chemical Tests: | ||
Conductivity | Monthly* | <2 µmhos/cm (µmsiemens/cm) at 25oC |
Total organic carbon | Monthly | <1.0 mg/L |
Heavy metals, single (Cd, Cr, Cu, Ni, Pb, and Zn) | Annually [DAGGER] | <0.05 mg/L |
Heavy metals, total | Annually [DAGGER | <0.10 mg/L |
Total chlorine residual | Monthly or with each use | <0.10 mg/L |
Bacteriological Tests: | ||
Heterotrophic plate count | Monthly | <500 CFU/mL |
Use test (see SM 9020B.5f2) | For a new source | Student's t [LESS THAN EQUAL TO] 2.78 |
Water quality test (see SM 9020B.5f1) [DOUBLE DAGGER] | Annually | 0.8-3.0 ratio |
*Monthly, if meter is in-line or has a resistivity indicator light; otherwise with each new batch of reagent water.
[DOUBLE] Or more frequently if nonconformance is identified.
[DOUBLE DAGGER] This bacteriological quality test is not needed for Type II water or better, as defined in Standard Methods (18th and 19th Editions), Section 1080 C, or medium-quality water or better, as defined in Standard Methods (20th, 21st, 22nd and Online Editions), Section 1080 C.
This section applies to all devices that may not be the actual test instrument, but that are necessary to support laboratory operations, if quantitative results are dependent on their accuracy. Such devices include, but are not limited to, the following: balances; ovens; refrigerators; freezers; incubators; water baths; temperature-measuring devices, including thermometers and thermistors; thermal/pressure sample preparation devices; autoclaves; and volumetric dispensing devices, such as Eppendorf or automatic diluter/dispensing devices.
10-144 C.M.R. ch. 263, § 8