Presentation on theme: "Analyze Immediately Temperature. Hold Times IMMEDIATELY! Between 0 -15 minutes, as close to sample collection time as possible - note both time of collection."— Presentation transcript:
Analyze Immediately Temperature
Hold Times IMMEDIATELY! Between minutes, as close to sample collection time as possible - note both time of collection AND time of analysis!
Important Specifics Other parameters are temperature-dependent EPA Method SM 2550B Follow NJAC 7: (a)5. Thermometric (grab) Continuous
New Jersey Regulations Graduated in 0.5 degree Celsius increments Bears repeating: CELSIUS, not Fahrenheit!!! For Fecal Coliform, at least 0.2 degree C increments
More Specifics Continuous monitors: 0.5 degree C increments Must verify & calibrate!(more on that next….)
Before we go any further... Important Definition! NIST = National Institute of Standards & Technology
Per NJAC Regulations: Must be calibrated against a NIST thermometer. Graduated in 0.2 degree C increments. The NIST must cover the range of all analyses for which the lab is certified. NIST must have a certificate with an ID number that matches the ID number on the NIST thermometer……..
But, do you know your options?? You perform calibration with your very own NIST thermometer; You ship out your thermometers & have a facility with a NIST perform the calibration & verification.
Option 1: Do It Yourself…. Advantages: Your very own NIST thermometer in-house. No need to ship out. No need to worry about paperwork from the other facility - you keep all the records. May be a cost savings.
Option 2: sending out your thermometers Advantages: No need to buy expensive NIST thermometer(s). Good if you have 1 or 2 thermometers. Disadvantages: Must keep associated certification forms. Breakage or lost in transit.
More Requirements Keep extensive records: serial #, correction factors, dates, initials, ID #s. must calibrate over the range of all thermometers in use at the facility. Glass: calibrate yearly. Metal: calibrate quarterly (includes thermocouples or infra-red devices).
NJAC 7: This section pertains specifically to Analyze-Immediately parameters… GENERAL: retain raw data records, quality control data records, chain-of-custody forms, laboratory reports… Storage of data - data must be filed & maintained in an accessible location on lab premises for 1 year after analysis date… Long-term storage: records of analysis must be stored for 5 years after analysis date. Records
Retain as Records of Analysis Assigned lab ID # or other form of ID date & time of analysis name & signature of person(s) who collected sample name & signature of person(s) who analyzed sample type of analysis performed & DSAM* used (*DSAM=Dept. Sanctioned Analytical Method) results of analysis & raw data generated from analysis
Reporting Results Certified environmental lab name & NJ lab ID number date, time & location of sample collection and sample analysis type of analysis performed and analytical method employed results from analysis name & signature of environmental lab manager or designee per NJ regulations (NJAC 7: (a)1iii)
In Closing….. Temperature is a simple test but,…. Calibration / verification a must…. Correction factors… Document, document, document!!! Temperature readings affect other analyses & instruments.