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Quartz (CFQ) EPR Tubes - 5mm OD

판매가격 24,900 원
카탈로그 NO. FAMILY-1415-3975
제조사/원산지 Wilmad-LabGlass /
제품사양 정보

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SP Wilmad-LabGlass NMR Consumable and Accessories.pdf

Order Information

Catalog No. Description 브랜드 단위 소비자가 추가
Catalog No.701-PQ-7 Description5 mm Medium Wall Precision Quartz EPR Sample Tube 7"L 브랜드Wilmad 단위1 EA 소비자가84,200원
Catalog No.702-PQ-7 Description5 mm Thin Wall Precision Quartz EPR Sample Tube 7"L 브랜드Wilmad 단위1 EA 소비자가99,400원
Catalog No.710-SQ-100M Description5 mm Thin Wall Quartz EPR Sample Tube 100 mm L 브랜드Wilmad 단위1 EA 소비자가24,900원
Catalog No.710-SQ-250M Description5 mm Thin Wall Quartz EPR Sample Tube 250 mm L 브랜드Wilmad 단위1 EA 소비자가26,700원

선택한 항목

Catalog No. Description 소비자가
총 합계 금액 0원


Quartz (CFQ) EPR Tubes – 5mm OD

EPR Tube Product numbers that include “PQ” belong to our Precision Tube Family. Those with “SQ” are our Economy brand tubes. Precision brand EPR tubes hold 10-15 times tighter tolerance on the inner diameter, and >5 times smaller camber and concentricity over Economy Brand tube. Precision tubes are recommended for cw-experiments that require a constant filling factor or reproducibility on sample volume in the cavity. Clear Fused Quartz (CFQ) is purified from naturally occurring quartz so the existence of certain material radicals from mining is inevitable. Due to technological advancements the sensitivity of EPR has gradually increased. The direct result is that certain high Q cavities will pick up the signal from these impurities, especially in tubes of over 4 mm OD. In this case we recommend switching to Suprasil® EPR products which are made of synthetic material and suppress major impurity contents shown in Table 1 by the average of 2 orders of magnitude. Impurity analysis test results for Suprasil® are shown below:Chemical impurity analysis results for CFQ are shown below: Table 1: Impurity Analysis for Clear Fused Quartz (unit: ppm in weight)  Al   Ca   Cr   Cu   Fe   K   Li   Mg   Mn   Na   Ti   Zr  15  0.5  <0.05  <0.05  0.1  0.4  0.6  0.05  <0.05  0.3  1.1  0.7  Table 2: Impurity Analysis for Suprasil Quartz (unit: ppm in weight)  Al   Ca   Cr   Cu   Fe   K   Li   Mg   Mn   Na   Ti   Zr  <0.05  <0.05  <0.05  <0.05  <0.05  <0.05  <0.05  <0.05  <0.05  <0.05  <0.05  <0.05  For photochemistry studies, the cut-off wavelength is 265 nm for CFQ and 190 nm for Suprasil.




701-PQ-7 Specifications

  • Tube Length (mm):178
  • Wall Thickness (mm):0.76
  • Concentricity/Camber (microns):102/102
  • Tube OD (mm):4.97 +/- 0.013
  • Tube ID (mm):3.43 +/- 0.013

702-PQ-7 Specifications

  • Tube Length (mm):178
  • Wall Thickness (mm):0.38
  • Concentricity/Camber (microns):102/102
  • Tube OD (mm):4.97 +/- 0.013
  • Tube ID (mm):4.20 +/- 0.013

710-SQ-100M Specifications

  • Tube Length (mm):100
  • Wall Thickness (mm):0.5
  • Tube OD (mm):5
  • Tube ID (mm):4

710-SQ-250M Specifications

  • Tube Length (mm):250
  • Wall Thickness (mm):0.5
  • Tube OD (mm):5
  • Tube ID (mm):4



Application Notes

Save Time Heat-Sealing EPR Samples! Heat-sealing quartz tubes is difficult enough so we’ve provided an easier way. By ordering our constricted tube you’ll seal EPR tubes more quickly, with less effort. Choose your tube, add the suffix “CONS” to the product number and remember to order 1 inch longer than required.




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