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پنجشنبه 2 آذر 1396

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قیمت محصولات واتمن

Whatman (part of GE Healthcare)
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Whatman quantitative filters are designed for gravimetric analysis and the preparation of samples for instrumental analysis. They are available in three formats designed to meet your specific needs:
  • Ashless: 0,007% ash maximum for grades 40 to 44 and a maximum of 0,01% for the 589 grades – very pure filters suitable for a wide range of critical analytical filtration procedures
  • Hardened low ash: 0,015% ash maximum – treated with a strong acid to remove trace metals and produce high wet strength and chemical resistance. These filters are particularly suitable for Büchner filtration where the tough smooth surface of the filter makes it easy to recover precipitates
  • Hardened ashless: 0,006% ash maximum – acid hardened to give high wet strength and chemical resistance with extremely low ash content. The tough surface makes these filters suitable for a wide range of critical filtration procedures

Ashless grades

Grade4041424344
Weight95 g/m²85 g/m²100 g/m²95 g/m²80 g/m²
Thickness0,21 mm0.22 mm0.20 mm0.22 mm0.18 mm
Particle retention8 µm20 - 25 µm20-25 µm2.5 µm16 µm3 µm
Filtration speed340 s (Herzberg)54 s (Herzberg)1870 s (Herzberg)155 s (Herzberg)995 s (Herzberg)
Ash content0.007%

GradeSizePkCat. No.Price
4032 mm100514-0579 £14.40
4042,5 mm100516-4101 £14.60
4047 mm100514-0580 £14.90
4055 mm100512-0308 £15.30
4070 mm100512-0309 £15.50
4090 mm100512-0310 £21.30
40110 mm100512-0311 £29.20
40125 mm100512-0312 £33.70
40150 mm100512-0313 £45.00
40185 mm100512-0314 £67.50
40240 mm100512-0315 £104.00
4155 mm100512-0316 £13.90
4170 mm100512-0317 £14.40
4190 mm100512-0318 £19.50
41110 mm100512-0319 £27.60
41125 mm100512-0320 £32.40
41150 mm100512-0321 £44.20
41185 mm100512-0322 £65.10
41240 mm100512-0323 £104.00
4242,5 mm100516-4301 £12.80
4255 mm100512-0324 £14.40
4270 mm100512-0325 £14.80
4290 mm100512-0326 £20.30
42110 mm100512-0327 £28.50
42150 mm100512-0329 £44.30
42185 mm100512-0330 £65.10
42240 mm100512-0009 £104.00
4390 mm100512-0424 £21.20
43110 mm100512-0396 £28.30
43125 mm100512-0397 £33.30
43150 mm100512-0398 £44.30
43185 mm100512-0399 £65.10
4470 mm100512-0331 £15.90
4490 mm100512-0332 £19.70
44110 mm100512-0333 £28.50
44125 mm100512-0334 £33.30
44150 mm100512-0335 £44.30
44185 mm100512-0336 £65.10
Ashless grades

Grade589/1589/2589/3
Weight80 g/m²85 g/m²84 g/m²
Thickness0,19 mm0,18 mm0,16 mm
Particle retention12 - 25 µm4 - 12 µm\<2 µm
Filtration speed25 s (Herzberg)70 s (Herzberg)20 s (Herzberg)
Ash content0,010%

GradeSizePkCat. No.Price
589/190 mm100512-3601 £20.90
589/1110 mm100512-3602 £29.70
589/1125 mm100512-3603 £34.60
589/1150 mm100512-3604 £47.30
589/1185 mm100512-3605 £69.50
589/212,7 mm1.000515-3214 £35.10
589/240,5 mm100515-3213 £13.60
589/255 mm100515-3200 £14.60
589/270 mm100515-3201 £17.90
589/290 mm100512-3607 £23.90
589/2110 mm100512-3608 £27.60
589/2125 mm100512-3609 £32.30
589/2150 mm100512-3610 £43.70
589/2185 mm100512-3611 £65.90
589/2240 mm100515-3207 £104.00
589/3110 mm100512-3613 £26.10
589/3125 mm100512-3614 £30.50
589/3150 mm100512-3615 £40.70
589/3185 mm100512-3616 £60.10
Hardened low ash grades
The maximum ash content of these grades is intermediate between ashless and qualitative. They are particularly suitable for Büchner filtrations where it is desirable to recover the precipitate from the filter surface after filtration. Other characteristics include high wet strength and chemical resistance which are similar to the acid hardened ashless filter papers.

Grade5054
Weight97 g/m²92 g/m²
Thickness0.15 mm0.19 mm
Particle retention2.7 µm22 µm20-25 µm
Filtration speed2685 s (Herzberg)39 s (Herzberg)
Ash content0.015%

GradeSizePkCat. No.Price
5055 mm100512-0337 £15.30
5070 mm100512-0338 £16.80
5090 mm100512-0339 £19.50
50110 mm100512-0340 £21.90
50125 mm100512-0341 £25.50
50150 mm100512-0342 £39.30
50185 mm100512-0343 £52.60
50240 mm100512-0344 £88.10
5455 mm100512-0345 £11.10
5470 mm100512-0346 £11.70
5490 mm100512-0347 £17.40
54110 mm100512-0348 £21.90
54125 mm100512-0349 £25.40
54150 mm100512-0350 £39.20
54185 mm100512-0351 £52.70
54240 mm100512-0352 £88.10
Hardened ashless grades
Quantitative filter papers featuring high wet strength and chemical resistance. These papers are acid hardened, which reduces ash to an extremely low level. Their tough surfaces make them suitable for a wide range of critical analytical filtration operations. Each grade offers a convenient combination of filtration speed and particle retention.

Grade540541542
Weight88 g/m²82 g/m²93 g/m²
Thickness0.16 mm0.15 mm
Particle retention8 µm22 µm20-25 µm2.7 µm
Filtration speed200 s (Herzberg)34 s (Herzberg)2510 s (Herzberg)
Ash content0.006%

GradeSizePkCat. No.Price
54055 mm100512-0425 £14.80
54090 mm100512-0353 £23.40
540110 mm100512-0354 £31.40
540125 mm100512-0355 £36.80
540150 mm100512-0356 £54.20
540185 mm100512-0357 £84.50
54155 mm100512-0358 £15.60
54170 mm100512-0359 £15.70
54190 mm100512-0360 £23.40
541110 mm100512-0361 £31.20
541125 mm100512-0362 £36.80
541150 mm100512-0363 £53.80
541185 mm100512-0364 £83.30
541240 mm100512-0365 £133.00
54255 mm100512-0366 £15.70
54270 mm100512-0367 £15.90
54290 mm100512-0368 £23.50
542110 mm100512-0369 £31.40
542125 mm100512-0370 £36.80
542150 mm100512-0371 £54.20
542185 mm100512-0372 £78.20
542240 mm100512-0373 £119.00
Hardened ashless grades

Grade542
Weight93 g/m²
Thickness0,15 mm
Particle retention2,7 µm
Filtration speed2510 s (Herzberg)
Ash content0,006%

GradeSizePkCat. No.Price
542400 mm100WHAT1542-400 £430.00

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