MAX Ultrafiltration Spiral-Wound Element
MQ MAX (PES 50kDa)
Synder Filtration’s Ultrafiltration Elements offer an optimal combination of both flux and rejection in a comprehensive range of MWCO’s. Contact us today to learn more about our complete line of membrane products and services.
MQ is another PES-based ultrafiltration membrane commonly used for specialty protein separation in the dairy industry and beverage clarification in the food & beverage industry. With a molecular weight cut-off of 50kDa, it lies between MK and LY and can be used for similar applications. Flat sheet, standard spiral-wound elements, and custom element configurations are available, as well as MAX versions, which offer additional resistance to high pH and high temperatures.
MAX SERIES BENEFITS
- Conforms to 3-A, FDA, and USDA sanitary standards
- Hot sanitization eliminates chlorine during CIP
- High resistance to pH and temperature
- High resistance to fouling
- Customizable dimensions for unique housings
COMMON APPLICATIONS
- Color removal
- Antibiotic concentration
- Protein & polypeptide concentration
Element Specifications
RECOMMENDED OPERATING PARAMETERS
| Operating Parameters | |
| Maximum Temperature | 60°C (140°F) |
| pH Range @ Max Temperature | 2-10 |
| pH Range @ Ambient Temperature | 2-10.5 |
| Pressure | PSI | Bar |
| Max Inlet Pressure | 120 | 8.3 |
| Min Outlet Pressure | 10 | 0.7 |
| Max Differential Pressure per Element | 18 | 1.2 |
| Max Permeate Backpressure | 5 | 0.3 |
Note: Soft start on boost pumps required to rninimize pressure/flow shocks to elements.
| Changing Parameters | |
| Maximum Temperature (Short term <30min) | 85°C (185°F) |
| pH Range @ Max Temperature | 2-11 |
| pH Range @ Ambient Temperature | 2-12.5 |
| Chlorine | Norm PPM | Max PPM |
| Free Chlorine During Operation | 0 | <0.1 |
| Chlorine During CIP at pH10.8-11.0 and 50°C | 150 | 180 |
Note: Maximum chlorine exposure for all elements is 30 minutes per day at pH and temperature conditions listed above.
| Dairy Product Total Solids Limits | Feed Spacer (in mils)
|
|||||||
| Sweet Whey Max. T.S. | 15 | 25 | 28 | 30 | ||||
| Acid Whey Max. T.S. | 15 | 24 | 26 | 28 | ||||
| Skim Milk Max. T.S. | 14 | 24 | 26 | 28 | ||||
| Whole Milk Max. T.S. | 15 | 30 | 33 | 35 | ||||
Note: Trials should be made to determine temperature and viscosity effects.
Element Dimensions
| Element | Model No. | Diameter (B) in | Length (A) in | P.W.T. ID |
| 1.8″ | 1812F | 1.8 | 12 | 0.63 |
| 2.5″ | 2519 2540F 2540M* |
2.5 2.5 2.5 |
19.25 40 38 |
0.63 0.63 0.75 |
| 3.8″ | 3838 3838.75 3850 3938.75 |
3.8 3.8 3.8 4.0 |
38 38.75 50 38.75 |
0.83 0.83 0.83 0.63 |
| 4.3″ | 4333 4335 4335.5 4336 4338 |
4.3 4.3 4.3 4.3 4.3 |
33 35 35.5 36 38 |
0.83 0.83 0.83 0.83 0.83 |
| 5.8″ | 5838 | 5.8 | 38 | 1.14 |
| 6.3″ | 6338 6324 |
6.3 6.3 |
38 24 |
1.14 1.14 |
| 6.4″ | 6438 6424 |
6.4 6.4 |
38 24 |
1.14 1.14 |
| 7.8″ | 7838 7824 |
7.8 7.8 |
38 24 |
1.14 1.14 |
| 8″ | 8038 8040 8238 8240 8338 8340 |
8.0 8.0 8.2 8.2 8.3 8.3 |
38 40 38 40 38 40 |
1.14 1.14 1.14 1.14 1.14 1.14 |
| 9.8″ | 9838 | 9.8 | 38 | 1.14 |
| 10″ | 10338 | 10.3 | 38 | 1.14 |
*1″ permeate tube extensions (0.75″ OD)
Recommended Element Cross Flow Rate
| Element | Feed Spacer (in mils)
|
||||||||||
| 1.8″ | m3/hr gpm |
1 4 |
1 5 |
1 6 |
2 7 |
2 7 |
|||||
| 2.5″ | m3/hr gpm |
2 9 |
2 10 |
3 11 |
3 12 |
3 13 |
|||||
| 3.8″ | m3/hr gpm |
5 22 |
6 25 |
7 29 |
8 33 |
8 35 |
|||||
| 4.3″ | m3/hr gpm |
6 29 |
7 32 |
9 38 |
10 44 |
10 46 |
|||||
| 5.8″ | m3/hr gpm |
12 51 |
13 59 |
16 69 |
18 78 |
19 83 |
|||||
| 6.3″ | m3/hr gpm |
15 65 |
17 74 |
20 88 |
22 99 |
24 105 |
|||||
| 8″ | m3/hr gpm |
21 94 |
24 107 |
29 128 |
33 143 |
35 154 |
|||||
| 10″ | m3/hr gpm |
42 184 |
48 213 |
57 250 |
64 283 |
68 299 |
|||||
The recommended cross flow rate will be subject to differential pressure limitations and specific applications. Please consult Synder Filtration if additional information is needed.

Membrane Area(SQ. FT.)
| Element | Model No. | Feed Spacer (in mils)
|
|||||||||
| 1.8″ | 1812F | 4.3 | 3.6 | 2.9 | 2.1 | 1.8 | |||||
| 2.5″ | 2519 2540M 2540F |
15 34 35 |
13 29 30 |
10 22 23 |
8 17 18 |
7 15 16 |
|||||
| 3.8″ | 3838 3838.75 3850 3938.75 |
85 86 100 102 |
72 74 84 89 |
58 59 70 69 |
46 47 52 53 |
38 39 46 47 |
|||||
| 4.3″ | 4333 4335 4335.5 4336 4338 |
99 105 107 108 115 |
86 91 93 94 100 |
66 71 72 73 77 |
53 56 57 58 62 |
44 47 48 49 52 |
|||||
| 5.8″ | 5838 | 210 | 184 | 147 | 114 | 96 | |||||
| 6.3″ | 6324 6338 |
150 245 |
134 220 |
107 176 |
83 136 |
70 115 |
|||||
| 6.4″ | 6424 6438 |
157 258 |
140 230 |
112 184 |
83 136 |
74 122 |
|||||
| 7.8″ | 7824 7838 |
242 396 |
210 344 |
166 273 |
132 216 |
110 180 |
|||||
| 8″ | 8038 8040 8238 8240 8338 8340 |
414 414 441 441 450 450 |
368 368 384 384 400 400 |
287 287 302 302 311 311 |
225 225 238 238 245 245 |
189 189 201 201 207 207 |
|||||
| 9″ | 9838 | N/A | 564 | 440 | 351 | 296 | |||||
| 10″ | 10338 | N/A | 620 | 492 | 386 | 326 | |||||
TECHNICAL NOTES
For element sires not listed, please coil or email Synder Filtration for Moils. We can design on element to fit your exact needs -just specify the element outer diameter (OD) or vessel/housing inner diameter OD), element inner diameter OD, and length. Elements ore also available with or without a controlled bypass tall Additional feed spacers are also available. Trials should be conducted to determine optimal application.
Element Descriptions
| Model No. | OD (in.) | L (in.) | ID* (in.) | Weight (lb) | Weight (kg) |
| 1812F | 1.8 | 12 | 0.63 | 1.0 | 0.5 |
| 2519 2540F 2540M* |
2.5 2.5 2.5 |
19.25 40 38 |
0.63 0.63 0.75 |
2 4 4 |
0.9 1.8 1.8 |
| 3838 3838.75 3850 3938.75 |
3.8 3.8 3.8 4.0 |
38 38.75 50 38.75 |
0.83 0.83 0.83 0.63 |
10 10 13 10 |
4.5 4.5 5.9 4.5 |
| 4333 4335 4335.5 4336 4338 |
4.3 4.3 4.3 4.3 4.3 |
33 35 35.5 36 38 |
0.83 0.83 0.83 0.83 0.83 |
11 11 11 11 12 |
5.0 5.2 5.2 5.2 5.4 |
| 5838 | 5.8 | 38 | 1.14 | 15 | 7 |
| 6338 6324 6438 6424 |
6.3 6.3 6.4 6.4 |
38 24 38 24 |
1.14 1.14 1.14 1.14 |
16 17 29 18 |
7 7.7 13.2 8.2 |
| 7838 7824 |
7.8 7.8 |
38 24 |
1.14 1.14 |
40 26 |
18.2 11.8 |
| 8038 8040 8238 8240 8338 8340 |
8.0 8.0 8.2 8.2 8.3 8.3 |
38 40 38 40 38 40 |
1.14 1.14 1.14 1.14 1.14 1.14 |
38 39 38 40 40 40 |
17.2 17.7 17.2 18 18 18 |
| 9838 | 9.8 | 38 | 1.14 | 42 | 19.1 |
| 10338 | 10.3 | 38 | 1.14 | 50 | 22.7 |
*1″ permeate tube extensions (0.75″ OD)
Note: Different diameters are available. Please specify your requirements when ordering. Specifications are subject to change without notice.


























