Table 7.

${}^{222}$Rn emanation measurements of various other samples. For comparison the ${}^{226}$Ra bulk activity taken from [10] is quoted and referred to as RID (Radioassay-ID) defined there

ID	Sample	Supplier	Description	${}^{222}$Rn emanation rate	${}^{226}$Ra activity [10]
#37	R11410 PMTs	Hamamatsu	29 pieces, mixture of low performance PMTs and mechanical samples	(58 ± 28) $\mathrm{\mu }$Bq (2.0 ± 1.0) $\mathrm{\mu }$Bq/PMT	RID #69(600 ± 100) $\mathrm{\mu }$Bq/PMT
#38	PMT bases	Fralock	55 pieces, made of Cirlex with soldered resistors and capacitors	(129 ± 25) $\mathrm{\mu }$Bq (2.4 ± 0.5) $\mathrm{\mu }$Bq/piece	RID #94 (15 ± 2) $\mathrm{\mu }$Bq/piece
#39	Kapton single wire cable	Accu-Glass	30 AWG solid core wire 100 m/0.076 kg for high voltage supply (used in XENON1T)	$\le$  35   $\mathrm{\mu }$Bq $\le$  0.35   $\mathrm{\mu }$Bq/m $\le$ 460   $\mathrm{\mu }$Bq/kg	RID #57 (4000 ± 1000) $\mathrm{\mu }$Bq/kg
#40	Kapton coaxial cable	Accu-Glass	30 AWG, 50 $\mathrm{\Omega }$ cable 100 m/0.55 kg for signal readout (not used in XENON1T)	$\le$ 25 $\mathrm{\mu }$Bq $\le$  0.25 $\mathrm{\mu }$Bq/m $\le$ 45 $\mathrm{\mu }$Bq/kg
#41	PTFE coaxial cable	Huber & Suhner	RG196 78 m/0.594 kg for signal readout (not used in XENON1T)	$\le$ 44 $\mathrm{\mu }$Bq $\le$ 0.56 $\mathrm{\mu }$Bq/m $\le$ 74 $\mathrm{\mu }$Bq/kg	RID #59 (1000 ± 300) $\mathrm{\mu }$Bq/kg
#42	PTFE coaxial cable	koax24	RG196 182 m/1.59 kg for signal readout (used in XENON1T)	$\le$ 58 $\mathrm{\mu }$Bq $\le$ 0.32 $\mathrm{\mu }$Bq/m $\le$ 36 $\mathrm{\mu }$Bq/kg	RID #55 and #56 (400 ± 200) $\mathrm{\mu }$Bq/kg
#43	D-sub type contact pins	Accu-Glass	1200 male and female pieces made of Cu/Be and Cu/bronze	$\le$ 47 $\mathrm{\mu }$Bq $\le$ 0.039 $\mathrm{\mu }$Bq/piece
#44	Epoxy for potting	Reliable Hermetic Seals	3 discs 9.5 mm thick, 95 mm diameter 506 cm${}^2$/191 cm${}^3$/0.47 kg	$\le$ 51 $\mathrm{\mu }$Bq$\le$ 1000 $\mathrm{\mu }$Bq/m${}^2$
#45	PTFE panels	Amsler & Frey	67 pieces, total: 4.06 m${}^2$/31.9 kg Length: 19 cm–24.5 cm Width: 13 cm–19 cm Thickness: 0.5 cm–1.6 cm	(97 ± 21) $\mathrm{\mu }$Bq (24 ± 5) $\mathrm{\mu }$Bq/m${}^2$ (3.0 ± 0.7) $\mathrm{\mu }$Bq/kg	RID #50 $<120\mathrm{\mu }$Bq/kg
#46	Copper rods	Luvata	150 pieces, each 15 cm long and 2 cm diameter 1.5 m${}^2$/7069 cm${}^3$/56.7 kg	$\le$ 25 $\mathrm{\mu }$Bq $\le$ 17 $\mathrm{\mu }$Bq/m${}^2$ $\le$ 0.44 $\mathrm{\mu }$Bq/kg
#47	${}^{220}$Rn calibration source [27]${}^{\mathrm{a}}$	PTB	Electro-deposited ${}^{228}$Th on stainless steel disc	$\le$  46   $\mathrm{\mu }$Bq

${}^{\mathrm{a}}$The limit presented here differs slightly from the result published in [27] ($\le 55\mathrm{\mu }$Bq) due to a data re-evaluation