1. Dynacal® Permeation Devices – Part Numbering System

2. 1XX – XXX – XXXX – XXXX – XXXX
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Perm Index
Topics
What is a permeation tube? How does it work?
Types of Dynacal® permeation devices
Wafer devices
Tubular devices
Diffusion vials
How are part numbers determined?
Part number format
1 Dynacal
2 Type of device – page
3 Certification
4 Permeation rate determining factor
Determining factor – breakdown for wafer device
Nine most common wafer devices
5 Permeant gas designation – page 1 2
6 Special device designation – page 1 2
7 Certification, special range or accuracy
Part number examples –
Special formulas – page
Estimate permeation rate at unknown temperature
Tolerance chart – page 1 2
Diffusion Vial part number format
1XX – XXX – XXXX – XXXX – XXXX 1 2 3 4 5 7 6

3. What is a permeation tube? How does it work?
A permeation tube is a sealed permeable membrane containing solid, liquid or liquefiable gases that permeate through the walls of the membrane at a constant rate.
The device is maintained at a constant temperature to establish constant vapor pressure inside the device. This results in an equilibrium between liquid/solid and the vapor phase of the chemical compound. The vapor escapes through the walls of the permeable membrane at a constant rate as long as the set point temperature is maintained. A measured flow of an inert gas such as nitrogen, helium, argon etc. is passed through the permeation chamber where the device is housed to capture and mix with the vapor resulting in known volumetric concentration in ppm/ppb. By varying the dilution flow rate one is able to generate a wide range of concentrations using a single device.

4. Types of Dynacal® permeation devices
Wafer
Tubular
Diffusion Vial A B C D
F Wafer
T Wafer
90 F3
50 T3
60 F3
40 T3
50 F3
30 T3
40 F3
30 T4
30 F3
STD
STD #10 HE
HE #2 LE
LE #2
LE #3
XLT
SILICON
NYLON
XLT
XLT #2
XLT #3
STD
STD
LE #2
STD #10
STD #10
STD #19
STD #19
LE #3

5. Designed to allow very low permeation rates
Wafer devices
A wafer device is a type of permeation device that uses a metal reservoir and a circular TFE or FEP permeable membrane
Wafer devices have an active length of 4.6 cm and an outer diameter of 1.6 cm
Designed to allow very low permeation rates
Available with or without certification
An example of a wafer type
30T4:
30 Wall thickness, in thousandths of an inch
T TFE (Permeable membrane)
4 Diameter of cap bore measured in sixteenths of an inch

6. Tubular devices
Dynacal tubular devices are primarily made out of different types of PTFE permeable membranes of varying wall thickness. They are available in active lengths of 0.5 to 20 cm long.
Each device is custom sized to generate the required mass per unit time to match the concentration range requirements of a specific application.
Typical permeation rates range from 5 ng/min to 50,000 ng/min for a single device.
Available with or without certification.

7. Diffusion vials
A diffusion vial is a Pyrex reservoir attached to a Pyrex stem having a fixed bore size. The reservoir is filled with the liquid or solid material of interest. When maintained at a constant temperature, the material establishes a two phase equilibrium between the solid/liquid and gas phase where the gas diffuses through the bore of the stem. By varying the stem length and the bore size, one is able to vary the permeation rate at a set point temperature.

8. How are part numbers determined?
There is a logical progression to each part number, once you understand the basic formula. Each number in the sequence represents a specific aspect of the device: for example, the type of tubing, the active length of the tube, or the chemical being used.
1XX – XXX – XXXX – XXXX – XXXX 1 2 3 4 5 6 7

9. 1XX – XXX – XXXX – XXXX – XXXX
Part number format
1XX – XXX – XXXX – XXXX – XXXX 1 2 3 4 5 6 7
1. Dynacal 
2. Type of device (ref: Tech Note 1002)
3. Certification (ref: Tech Note 1002)
4. Permeable area Tubular: Active Length in mm (range: 0.5 cm to 20.0 cm) Wafer: Wall thickness (0.030 – 0.090”)
5. Chemical number (ref: Rate Table & Price Sheet)
6. Special device designation (may not apply to all devices)
7. Certification, special range or special accuracy (i.e.: C, U or S)

10. 1XX – XXX – XXXX – XXXX – XXXX
Dynacal®
#1 in part number format
1XX – XXX – XXXX – XXXX – XXXX 1 2 3 4 5 6 7
The first digit of all Dynacal devices will be designated as “1”.

11. 1XX – XXX – XXXX – XXXX – XXXX
Type of Device
#2 in part number format – general
1XX – XXX – XXXX – XXXX – XXXX 1 2 3 4 5 6 7
0 Tubular Device High Emission
1 Tubular Device Standard Emission
2 Tubular Device Low Emission
3 Tubular Device Special
4 Wafer Device
5 Wafer Device Special
7 XLT Device Standard Emission
8 XLT Device Special

12. Type of Device (cont’d 1)
#2 in part number format - specific
1XX – XXX – XXXX – XXXX – XXXX 1 2 3 4 5 6 7
Tube
Numerical representation in P/N
Tube designation
STD 1
N/A
STD #10 10
STD #19
T33 HE
HE #2
T56 LE 2
LE #2
F56
LE #3
F59

13. Type of Device (cont’d 2)
#2 in part number format - specific
1XX – XXX – XXXX – XXXX – XXXX 1 2 3 4 5 6 7
Tube
Numerical representation in P/N
Tube designation
Silicon 3
S56
Nylon
N43
XLT 7
10, T33
XLT #2 8
F56
XLT #3
F33, 10, T33, F59
Reference Technical Note 1002, page 5

14. Type of Device (cont’d 3)
#2 in part number format - specific
1XX – XXX – XXXX – XXXX – XXXX 1 2 3 4 5 6 7
Wafer Device numerical representation
Valco 4
N/A
Valco high capacity 5 VH
Valco old style OS
Monitor Labs ML
CSI-MELOY ME
Philips 9700 P
Threaded cap (Beckman)
TH (BK)

15. 1XX – XXX – XXXX – XXXX – XXXX
Certification
#3 in part number format
1XX – XXX – XXXX – XXXX – XXXX 1 2 3 4 5 6 7
0 Uncertified
1 Tubular high range (>500 ng/min)
2 Tubular mid range ( ng/min)
3 Tubular low range ( ng/min)
4 Wafer high range (>100 ng/min)
5 Wafer low range ( ng/min)
6 Tubular or Wafer ultra low range (5-19 ng/min)
7 Special temperatures, ranges, or accuracies
Note1: 1-6 represent certification at 30°C only.
Note2: Third digit remains 7 for all temperatures above 30°C for all rates..

16. Permeation Rate Determining Factor
#4 in part number format
1XX – XXX – XXXX – XXXX – XXXX 1 2 3 4 5 6 7
001 to 200 Active tube length in mm (Formula: required rate/per cm rate)
Wafer device with “T” wafer
Wafer device with “F” wafer
Waver device with special wafer
- y - Wafer thickness (.0y”)
- - z Wafer diameter (z/16”)

17. Determining Factor – Breakdown for Wafer Device
#4 in part number format - specific
1XX – XXX – XXXX – XXXX – XXXX 1 2 3 4 5 6 7
Each device is then represented in the part number by a three digit code.
X X X a b c 4
a Represents the type of tubing. 5 – TFE , 6- FEP
b Represents the wall thickness of the tube (range of 3-9)
c Represents the diameter of the cap bore in 16th of an inch. (range of 3 or 4)

18. Nine Most Common Wafer Devices
Part Number
Wafer Device Type
Perm Rate Ratio
14X-534-XXXX
30T4 (.03” thick x 4/16” dia T wafer)
1.0
533
30T3 (.03” thick x 3/16” dia T wafer)
0.60
543
40T3 (.04” thick x 3/16” dia T wafer)
0.40
553
50T3 (.05” thick x 3/16” dia T wafer)
0.23
633
30F3 (.03” thick x 3/16” dia F wafer)
0.14
643
40F3 (.04” thick x 3/16” dia F wafer)
0.11
653
50F3 (.05” thick x 3/16” dia F wafer)
0.07
663
60F3 (.06” thick x 3/16” dia F wafer)
0.05
693
90F3 (.09” thick x 3/16” dia F wafer)
0.03
Reference Technical Note 1002, Table 2

19. Permeant Gas Designation
#5 in part number format
1XX – XXX – XXXX – XXXX – XXXX 1 2 3 4 5 6 7
Inorganic compounds
Organo-metallic compounds
Hydrocarbons
Hydrocarbons containing oxygen
Hydrocarbons containing halogen
Hydrocarbons containing nitrogen
Hydrocarbons containing sulfur
Other organic compounds

20. Permeant Gas Designation (cont’d)
#5 in part number format - Examples
1XX – XXX – XXXX – XXXX – XXXX 1 2 3 4 5 6 7
Chemical or Gas Grouping
Designation
Chemical or Gas
Inorganic compounds
0110
Hydrogen Sulfide
Organo-metallic compounds
0330
Dimethyl Mercury
Hydrocarbons
0505
Pentane-N
Hydrocarbons containing oxygen
2300
Formaldehyde
Hydrocarbons containing halogen
4201
Dichloromethane
Hydrocarbons containing nitrogen
5000
Methyl Amine
Hydrocarbons containing sulfur
6301
Dimethyl Disulfide
Other organic compounds
7600
Carbonyl Sulfide

21. Special Device Designation
#6 in part number format
1XX – XXX – XXXX – XXXX – XXXX 1 2 3 4 5 6 7
Tube Type
Tube Designation
STD #10 10
STD #19
T33
HE #2
T56
LE #2
F56
LE #3
F59
CSI-MELOY ME
Silicon
S56
Nylon
N43
XLT
10, T33
XLT #2
XLT #3
F33, 10, T33, F59

22. Special Device Designation (cont’d)
#6 in part number format
1XX – XXX – XXXX – XXXX – XXXX 1 2 3 4 5 6 7
Wafer Device
Special Designation
Valco High Capacity VH
Monitor Lab 8500 ML
Monitor Labs 8850
MLRA
Philips 9700 P
Threaded Cap (Beckman)
TH (BK)
Specials
OS, VH, LW

23. Certification, Special Range or Accuracy
#7 in part number format
1XX – XXX – XXXX – XXXX – XXXX 1 2 3 4 5 6 7
C Certified followed by temperature in °C. (i.e.: C30 or C45)
U Uncertified followed by temperature in °C. (i.e.: U30 or U50)
S Special certification, special range or special accuracy

24. 1XX – XXX – XXXX – XXXX – XXXX
Part Number Example #1
Sulfur Dioxide standard permeation tube, with the rate of 5000 ng/min, certified at 35°C.
C35
1. 1 Dynacal
2. 1 Tubular Device – Standard Emission tube
3. 7 Special temperatures, ranges, or accuracies (customer request unit to be certified at a temperature other than 30°C)
Active tube length in mm (8.3 cm). Active length is calculated using active length formula
Chemical compound designation for Sulfur dioxide
6. N/A for this part number
7. C35 Certified at 35°C
1XX – XXX – XXXX – XXXX – XXXX 1 2 3 4 5 6 7

25. 1XX – XXX – XXXX – XXXX – XXXX
Part Number Example #2
Sulfur dioxide, low emission permeation tube, with the rate of 450 ng/min , certified at 30°C.
F56-C30
1. 1 Dynacal
2. 2 Tubular Device – Low Emission
3. 2 Tubular mid range ( ng/min)
Active tube length in mm (1.3 cm)
Sulfur dioxide numeric representation
6. F56 LE #2, Low Emission Tube
7. C30 Certified at 30°C
1XX – XXX – XXXX – XXXX – XXXX 1 2 3 4 5 6 7

26. 1XX – XXX – XXXX – XXXX – XXXX
Part Number Example #3
Nitrogen oxide wafer device, Valco Style, certified at 40°C
C40
1. 1 Dynacal
2. 4 Wafer device
3. 7 Special temperatures, ranges, or accuracies
T3 (.05” thick x 3/16” dia T wafer)
Nitrogen dioxide numeric representation
6. N/A for this part
7. C40 Certified at 40°C
1XX – XXX – XXXX – XXXX – XXXX 1 2 3 4 5 6 7

27. Special Formulas
Active Length (mm) = Required Rate (ng/min) /Per cm Rate (answer will be in cm)
Total Rate (ng/min) = Active Length x Per cm Rate
Tubular Devices
For rates:
>500 ng/min Accuracy = +/- 2%
ng/min Accuracy = +/- 2% or +/- 5 ng/min Whichever is greater
ng/min Accuracy = Rate x 5% or +/- 2 ng/min Whichever is greater
5-19 ng/min Accuracy = +/- 10%

28. Special Formulas (cont’d)
Wafer Devices
For rates:
>100 ng/min Accuracy = Rate x 5%
ng/min Accuracy = Rate x 5% or +/- 2 ng/min Whichever is greater
5-19 ng/min Accuracy = Rate x 10%

29. Special Formulas to find the following:
P Permeation rate (ng/min)
F Flow rate (cc/min or 1pm)
C Concentration (ppm or ppb)
K Molar constant = 24.46/molecular wt. of compound
P = (F x C) / K
F = (P x K) / C
C = (P x K) / F

30. Estimate permeation rate at unknown temperature
log P1 = log P0 + α(T1-T0)
Log = Base 10
P1 = Perm rate (ng/min) at new temperature (ºC)
P0 = Perm rate (ng/min) at known temperature (ºC)
T1 = New temperature (ºC)
T0 = Known temperature (ºC)
α = Temperature coefficient
Note: Before exposing device to higher temperatures, end user must consult VICI Metronics to obtain information on maximum temperature settings.

31. Tolerance Chart
Device OD Rate Range Act Length (cm) (+/-) (cm)
HE 0.98 >100 +/- 15% 0.5 to to 100 +/- 25% 5 to 19 +/- 50%
STD/STD # >100 +/- 10% 0.5 to to 100 +/- 25% 5 to 19 +/- 50%
STD # >100 +/- 15% 0.5 to to 100 +/- 25% 5 to 19 +/- 50%
LE (Capsule) 0.98 >100 +/- 25% 1 or to 100 +/- 50%
LE # >100 +/- 10% 0.5 to to 100 +/- 20% 5 to 19 +/- 50%

32. Tolerance Chart (cont’d)
Device OD Rate Range Act Length (cm) (+/-) (cm)
LE # >100 +/- 15% 0.5 to to 100 +/- 20% 5 to 19 +/- 50%
Silicon 0.98 >100 +/- 15% 0.5 to to 100 +/- 25% 5 to 19 +/- 50%
Nylon 0.98 >100 +/- 15% 0.5 to to 100 +/- 25% 5 to 19 +/- 50%
All Wafer to 100 +/- 25% 4.6
Devices 5 to 19 +/- 50%

33. Diffusion Vial Part Number Format
19X - XXXX – XXX/X - S 1 2 3 4 5
1. 19 = Diffusion Vial
2. Bore size
3. Chemical number
4. Certification designation
5. Special designation