Some Useful Information Concerning the results:
The Conversion factors for the primordial nuclides are given by: 1 Bq 238U/kg = 81 ppb U (81 x 10-9 gU/g) The 238U decay chain gammas used are: 226Ra: 186.1 keV
214Pb: 295.21 and 351.92 keV
214Bi: 609.31, 1120.29, 1764.49 and 2204.21 keV
The relationships are valid for any daughters in the 238U, 235U or 232Th chain only if the chain is in equilibrium. 1 Bq 232Th/kg = 246 ppb Th (246 x 10-9 gTh/g) The 232Th decay chain gammas used are: 212Pb: 238.63 and 300.09 keV
208Tl: 583.19 and 2614.53 keV,
228Ac: 911.21 keV
1 Bq 40K/kg = 32300 ppb K (32300 x 10-6 gK/g) The 40K decay chain gamma used is: 40K: 1460.83 keV
1 Bq 235U/kg = 1.76 ppm U (1.76 x 10-6 gU/g) The 235U decay chain gammas used are: 235U: 143.76, 163.33 and 205.31 keV

The measurements of the samples below take into account the background measurements. If a measurement is below the background then the upper bound shown is the 90% confidence limit.
CUTE Measurements:



























Sample Description Manufacturer Mass (g) Live Time (days) Counting Dates
(if applicable)

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
CUTE 001 4 Samples each is 1” x 3.75” x 3.75” 904.3 g 13.604 Oct 1, 2018 (mBq/kg) <0.45 ppb

9.73 +- 12.67 0.22 +- 0.60 <0.54

<6.37

<0.369

<0.15


HDPE Sheet SR Natural Cube


Oct 15, 2018 (ppb or ppm) <36.81 ppt

0.79 ppb +- 1.03 ppb 0.38 ppb +- 1.06 ppb <0.14 ppb

<205.70 ppb










CUTE 002 Sample Plates are 9.5 x 9.0 x 0.5 cm 1022.6 g 6.799 Oct 15, 2018 (mBq/kg) <0.79

53.55 +- 37.73 2.16 +- 1.33 0.22 +- 0.86 <15.12

<0.54

8.50 +- 0.98 54Mn Signal:
SAS Stainless Steel Drywell Plates


Oct 22, 2018 (ppb or ppm) <64.08 ppt

4.34 ppb +- 3.06 ppb 3.81 ppb +- 2.35 ppb 0.05 ppb +- 0.21 ppb <488.45 ppb







1.83 mBq/kg +- 0.66 mBq/kg
CUTE 003 Sample Plates are 9.5 x 9.0 x 0.5 cm 1024.1 g 6.125 Nov 2, 2018 (mBq/kg) <0.89

<53.85

<1.73

<0.50

<8.38

<0.58

8.57 +- 1.04 54Mn Signal:
SAS Stainless Steel Drywell Plates These plates have welds

Nov 8, 2018 (ppb or ppm) <72.05 ppt

<4.36 ppb

<3.05 ppb

<0.12 ppb

<270.64 ppb







0.90 mBq/kg +- 0.64 mBq/kg
CUTE 004 FA 412 Lead
(low activity lead)
2” x 2” x 0.2” 		242.5 g 13.972 Jan 15, 2019 (mBq/kg) 1.85 +- 1.76 16.82 +- 71.02 10.13 +- 11.68 17.46 +- 3.30 <15.73

<1.23

<0.21

210Po: <116200.00
Lead Disk Fonderie de Gentilly

Jan 30, 2019 (ppb or ppm) 0.15 ppb +- 0.14 ppb 1.36 ppb +- 5.75 ppb 17.83 ppb +- 20.56 ppb 4.3 ppb +- 0.81 ppb <508.08 ppb








<9.41 ppm

Additional Activities:
(mBq/kg)





228Ac: <2.33













(ppb or ppm)




(Not in Equilibrium with other Th daughters) <0.57 ppb











CUTE 005 TFA 393 Lead
(very low activity lead)
4” (d) x 0.2” (th)		 221.6 g 23.812 Aug 1, 2019 (mBq/kg) 0.95 +- 1.21 <60.36

<11.19

<2.72
. 5.72 +- 11.69 <1.17

<0.63

210Po: <43780.00
Lead Disk Fonderie de Gentilly

Aug 26, 2019 (ppb or ppm) 0.08 ppb +- 0.1 ppb <4.89 ppb

<19.69 ppb

<0.67 ppb

184.72 ppb +- 377.59 ppb






<3.55 ppm
CUTE 006 1-Bromo-3-Chloro-5,5-Dimethylimidazolidine-2,4-Dione 999.9 g 6.000 Apr 23, 2019 (mBq/kg) 8.42 +- 1.25 11.39 +- 30.07 <2.90

2.51 +- 1.04 19.44 +- 9.71 <1.13

<0.60


BROM-N-8 Tablets Mursatt Chemicals Ltd, Woodbridge ON, Canada

Apr 29, 2019 (ppb or ppm) 0.68 ppb +- 0.1 ppb 0.92 ppb +- 2.44 ppb <5.1 ppb

0.62 ppb +- 0.26 ppb 627.82 ppb +- 313.7 ppb








CUTE 007 Ultra Pure Water and Other Things 968.43 g 8.625 Mar 20, 2019 (mBq/kg) 17.45 +- 1.31 <30.48

0.57 +- 0.48 1.82 +- 0.78 11.47 +- 7.21 <0.67

<0.39


Water Sample from CUTE Shielding Tank


Mar 29, 2019 (ppb or ppm) 1.41 ppb +- 0.11 ppb <2.47 ppb

1 ppb +- 0.85 ppb 0.45 ppb +- 0.19 ppb 370.55 ppb +- 232.95 ppb








CUTE 008 Copper Disk Cut Into Four Quarters 3242.4 g 20.499 Apr 26, 2021 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Copper Sheet Material

May 17, 2021 (mBq/kg) <0.27

<9.23

<0.47

<0.22

<3.88

<0.48

<0.10





Run: 210426
210429
(ppm / ppb / ppt) <21.87 ppt

<0.75 ppb

<0.83 ppb

<54.12 ppt

<125.32 ppb














Results:
7Be:

54Mn




228Ac:
57Co
58Co











(mBq/kg) <2.98

<0.18




<0.38

0.90 +- 0.79 1.35 +- 0.22










(ppm / ppb / ppt)








<93.48 ppt













CUTE 009 M16 Brass 51.0 g 11.673 Jun 11, 2021 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Brass Screws and Nuts Five bags of parts, there are 100 parts in each bag
Run: 210611 Jun 23, 2021 (mBq/kg) 7.12 +- 4.00 <155.60

<2.50

<7.08

<87.59

<5.63

<1.84







(ppm / ppb / ppt) 0.58 ppb +- 0.32 ppb <12.6 ppb

<4.4 ppb

<1.74 ppb

<2.83 ppm














Results:
7Be:

54Mn




228Ac:
57Co
58Co











(mBq/kg) <42.57

3.07 +- 2.02


<5.66

<6.66

1.91 +- 1.75










(ppm / ppb / ppt)








<1.39 ppb













CUTE 010 OSA #905 – UPW batch from CUTE batch before leaching – Case #0002 1054.4 g 13.687 Feb 11, 2022 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Ultra Pure Water

Run: 220211
220222		 Feb 25, 2022 (mBq/kg) 0.95 +- 0.35 <9.84

0.15 +- 0.21 0.21 +- 0.42 <3.96

<0.36

<0.14







(ppm / ppb / ppt) 0.08 ppb +- 0.03 ppb <0.8 ppb

0.26 ppb +- 0.37 ppb 0.05 ppb +- 0.1 ppb <127.91 ppb














Results:
7Be:

54Mn




228Ac:















(mBq/kg) <2.91

<0.23




0.03 +- 0.46
















(ppm / ppb / ppt)








0.01 ppb +- 0.11 ppb











CUTE 011 OSA #905 – UPW case #2, First leach (2 weeks) 992.3 g 13.868 Mar 11, 2022 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Ultra Pure Water

Run: 220311 Mar 25, 2022 (mBq/kg) 0.11 +- 0.32 <8.66

<0.23

0.25 +- 0.43 <6.46

<0.451

<0.071







(ppm / ppb / ppt) 9.06 ppt +- 25.66 ppt <0.7 ppb

<0.4 ppb

0.06 ppb +- 0.1 ppb <0.21 ppm














Results:
7Be:

54Mn




228Ac:















(mBq/kg) <3.94

<0.18




0.30 +- 0.56
















(ppm / ppb / ppt)








0.07 ppb +- 0.14 ppb











CUTE 012 OSA #905 – UPW second rinse (2 weeks) 998.6 g 9.646 Mar 25, 2022 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Ultra Pure Water

Run: 220325 Apr 4, 2022 (mBq/kg) 1.45 +- 0.47 <18.03

0.15 +- 0.25 <0.57

<12.19

<0.55

<0.13







(ppm / ppb / ppt) 117.53 ppt +- 38.3 ppt <1.46 ppb

0.26 ppb +- 0.44 ppb <0.14 ppb

<0.39 ppm














Results:
7Be:

54Mn




228Ac:















(mBq/kg) <3.86

<0.14




<0.93


















(ppm / ppb / ppt)








<0.23 ppb













CUTE 013 OSA #905 – UPW Leach water at 4 week mark 986.4 g 9.833 Apr 4, 2022 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Ultra Pure Water

Run: 220404 Apr 14, 2022 (mBq/kg) <0.52

5.38 +- 10.53 <0.31

<0.75

5.03 +- 5.04 <0.56

<0.12







(ppm / ppb / ppt) <42.12 ppt

0.44 ppb +- 0.85 ppb <0.55 ppb

<0.18 ppb

162.45 ppb +- 162.76 ppb












Results:
7Be:

54Mn




228Ac:















(mBq/kg) <1.62

<0.26




0.45 +- 0.69
















(ppm / ppb / ppt)








0.11 ppb +- 0.17 ppb











CUTE 014 OSA #905 – UPW second rinse (4 weeks) 977.3 g 10.798 Apr 14, 2022 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Ultra Pure Water

Run: 220414 Apr 25, 2022 (mBq/kg) 0.37 +- 0.39 <12.63

<0.59

<1.06

2.14 +- 4.69 <0.36

<0.068







(ppm / ppb / ppt) 29.96 ppt +- 31.55 ppt <1.02 ppb

<1.04 ppb

<0.26 ppb

69.1 ppb +- 151.39 ppb












Results:
7Be:

54Mn




228Ac:















(mBq/kg) <3.33

<0.11




<0.58


















(ppm / ppb / ppt)








<0.14 ppb













CUTE 015
5.6 g 13.784 May 17, 2022 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Coax Stainless Steel Connector
Run: 220517 May 31, 2022 (mBq/kg) <18.87

276.10 +- 727.30 <19.30

<29.41

314.37 +- 334.60 <24.43

<10.06







(ppm / ppb / ppt) <1.53 ppb

22.36 ppb +- 58.91 ppb <33.97 ppb

<7.23 ppb

10.15 ppm +- 10.81 ppm












Results:
7Be:

54Mn




228Ac:















(mBq/kg) <231.50

6.99 +- 10.03


<64.68


















(ppm / ppb / ppt)








<15.91 ppb













CUTE 016
257.8 g 6.312 Sep 16, 2022 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
133Ba SRS-22-001-A Rinse Solution

Run: 220916
220919
22091901
220920		 Sep 23, 2022 (mBq/kg) <2.00

<64.04

<1.53

5.58 +- 3.29 <21.44

<4.55

<0.41







(ppm / ppb / ppt) <0.16 ppb

<5.19 ppb

<2.69 ppb

1.37 ppb +- 0.81 ppb <692.51 ppb














Results:
7Be:

54Mn




228Ac:
133Ba:













(mBq/kg) <17.74

<0.76




3.43 +- 3.61 117.43 +- 10.31













(ppm / ppb / ppt)








0.84 ppb +- 0.89 ppb











In Progress and To Be Measured:



























Sample Description Manufacturer Mass (g) Live Time (days) Counting Dates
(if applicable)






















Next Sample

Queue: Empty
Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments




(mBq/kg)


























(ppm / ppb / ppt)



























Results:
7Be:

54Mn




228Ac:















(mBq/kg)




























(ppm / ppb / ppt)