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Stratyx250 Vessel Specifications

Information on the reactor vessel consumable, including fill volume, impeller geometry, kLa, and power number characterization.

Updated over 5 months ago

Vessel Geometry

Wetted materials

USP VI or ISO 10993 polymers

Vessel H:D ratio at max working volume

1:1

Total volume

470 mL

Working volume max

250 mL

Working volume min

100 mL

Liquid height at 250 mL

70 mm

Liquid height at 100 mL

30 mm

Turndown ratio

2.5


Impeller Geometry

Impeller type

2 count, 3-blade, 45° pitch

Impeller diameter

23.6 mm

Impeller spacing

30 mm

Bottom impeller distance from bottom

20 mm

Baffle intrusion

6.5mm (~ 1/10 of vessel diameter)

Impeller power number

~ 3.7

Tip speed

0.5 m/s @400rpm

Max agitation speed

1000 rpm

Min agitation speed

0 rpm

Sparge Specifications

Sparger type

Open pipe L-shape

Sparger opening

1.0 mm

Sparger position

Below impeller

Sparge gas rate - air

0 - 100 sccm

Sparge gas rate - O2

0 - 100 sccm

Sparge gas rate - CO2

0 - 100 sccm

Sparge gas rate - N2

0 - 100 sccm

Overlay gas rates

0 - 100 sccm

General Information

Temperature range

4- 45 °C

pH sensor type

Optical patch (optional single-use glass)

pH range (patch)

5.5-8.5

pH range (probe)

2-12

DO sensor type

Optical patch

DO range

0-100% up to 45mg/L O2


Fill Volumes

Fill Volume (ml)

Fluid height (mm)

Height/Diameter

Notes

80

24

0.35

Covers first impeller

100

29.5

0.43

Minimum working volume

150

43.5

0.63

Just below second impeller

186

54

0.77

Just above second impeller

250

71.3

1.01

Max recommended working volume

300

84.6

1.18

321

90

1.25

Top of baffles

360

100

1.38

455

125

1.72

Full vessel volume (for use in headspace calculations)

Port Mapping

1

Offgas port

2

Inoculation port

3

Glass pH probe / PG13.5 port

4

Media fill and harvest port

5

Sampling port 1

6

Feed line 1

7

Feed line 2

8

Overlay sparge filter

9

Primary sparge filter

10

Secondary sparge filter

11

Offgas return filter

12

Sampling port 2

13

Feed line 3

14

Feed line 4

15

Secondary sparger plug

16

Antifoam port

17

Sparge tube

18

Overlay port

Power Characterization

Two impeller, 45°pitch, 23.6mm diameter

RPM

Power/Volume (W/m^3)

200

5

400

40

500

68

600

112

700

171

800

246

900

354

1000

485



kLa Characterization

Two impeller, 25°pitch, 23.6mm diameter

Sparge (sccm)

Agitation (RPM)

kLa (hr-1)

1

100

1.1

1

300

2.6

1

500

3.6

1

700

4.6

5

100

1.6

5

300

4.1

5

500

5.9

5

700

7.9

10

100

2.1

10

300

4.8

10

500

6.9

10

700

9.9

40

100

4.1

40

300

6.6

40

500

12.3

40

700

13.7

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