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LSC - Laboratory for liquid scintillation spectrometry
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Annex to the Accreditation Certificate LP-022

Type of scope:  flexible (possibility of implementig minor modifications of the method)*
Mesto izvajanja:  in the  laboratory
Testing fields with reference to the type of test: radiochemistry, radiation (alfa, beta, gamma spectrometry, radiation protection measurements)
Testing fields with reference to the type of test item: environment and samples from the environment (waters); foodstuffs (water); biological samples (clinical and pathological samples)

 

No. Reference to standard or non-standard testing method Title of standard or non-standard testing method and eventual relations to other standards or me¬thods Range of testing; Uncertainty of the result of testing (where relevant) Materials; products
1.  LSC-DN-07 / ver. 05 (July 2014)
in-house method
Liquid scintilation spectrometry for tritium determination:
- direct method
- electrolytical enrichment method
direct method, water samples
(1000 – 5000) Bq/m3
uncertainty (k=1) ≥ 10 %
≥ 5000 Bq/m3
uncertainty (k=1) ≥ 3 %

direct method, urine samples
(7200 – 50.000) Bq/m3
uncertainty (k=1) ≥ 10 %
≥ 50.000 Bq/m3
uncertainty (k=1) ≥ 3 %

method with electrolytical enrichment, water samples
(50 – 1000) Bq/m3
uncertainty (k=1) ≥ 10 %
≥1000 Bq/m3
uncertainty (k=1) ≥ 3 %
direct method:
water, urine


method with electrolitic enrichment:
water
2.LSC-DN-10 / Ver. 02 (Jan. 2016)
in-house method
Liquid scintillation spectrometry
to determine the total activity of α and β emitters in water
- Direct method
- Method of concentrating

direct method

MDC:

α emitters: 0,042 Bq/kg (or Bq/L)

β emitters: 0,44 Bq/kg (or Bq/L)

 

uncertainty (k=1):

0,042 - 1 Bq/kg (or Bq/L) (α emitters): > 10%

0,44 - 10 Bq/kg (ali Bq/L) (β emitters): > 10%

≥ 0,1 Bq/kg (or Bq/L) (α emitters): > 2,5%

≥ 10 Bq/kg (or Bq/L) (β emitters): > 3,5 %

 

method with concentration of the sample, initial mass 50 - 200 g

MDC:

α emitters: 0,005 Bq/kg (or Bq/L)

β emitters: 0,05 Bq/kg (or Bq/L)

 

uncertainty (k=1):

0,005 - 0,13 Bq/kg (or Bq/L) (α emitters): > 10 %

0,05 - 0,5 Bq/kg (or Bq/L) (β emitters): > 10%

≥ 0,13 Bq/kg (or Bq/L) (α emitters): > 2,5%

≥ 0,5 Bq/kg (or Bq/L) (β emitters): > 3,5%

 

method with concentration of the sample, initial mass 200 - 1500 g

MDC:

α emitters: 0,0013 Bq/kg (or Bq/L)

β emitters: 0,014 Bq/kg (or Bq/L)

 

uncertainty (k=1):

0,0013 - 0,03 Bq/kg (or Bq/L) (α emitters): > 10 %

0,014 - 0,3 Bq/kg (or Bq/L) (β emitters): > 10%

≥  0,03 Bq/kg (or Bq/L) (α emitters): > 2,5%

≥  0,3 Bq/kg (or Bq/L) (β emitters): > 3,5%

 

method with concentration of the sample, initial mass > 1500 g

MDC:

α emitters: 0,00017 Bq/kg (or Bq/L)

β emitters : 0,0018 Bq/kg (or Bq/L)

 

uncertainty (k=1):

0,00017 - 0,004 Bq/kg (or Bq/L) (α emitters): > 10%

0,0018 - 0,04 Bq/kg (or Bq/L) (β emitters): > 10%

≥ 0,004 Bq/kg (or Bq/L) (α emitters): > 2,5%

≥ 0,04 Bq/kg (or Bq/L) (β emitters): > 3,5%

water

* Laboratory can implement minor modifications of the method as necessary (e.g. adaptation to the new version). Detailes on the actual state of the scope is maintained by the laboratory.

Accreditations
NDS - Laboratory for Dosimetry Standards
LMR - Laboratory for Radioactivity Measurements
TLD - Laboratory for Thermoluminiscent Dosimetry
ELME - Ecological laboratory with mobile unit
LSC - Laboratory for liquid scintillation spectrometry

Updated: 03-04-2017