Ahlstrom Filter Paper>Qualitative Filter Discs>Qualitative Standard Filter Discs

3um Qualitative Standard Filter Discs
2.5um Qualitative Standard Filter Discs
4um Qualitative Standard Filter Discs
1.5um Qualitative Standard Filter Discs
6um Qualitative Standard Filter Discs
25um Qualitative Standard Filter Discs
35um Qualitative Standard Filter Discs
10um Qualitative Standard Filter Discs
2um Qualitative Standard Filter Discs

3um Qualitative Standard Filter Discs

Grade 237 Filter Disc is highly absorbant, twice as thick as grade 642with similar partical retention. The superior absorbencyoffers excellent performance when used as a sample carrier. The extra thickness gives higher wet strength and loading capacity, enabling more precipitate to be held without clogging the filter. Ahlstrom 237 is also highly suitable for use in Buchner funnels and for dye filtration. For 2.5cm size please contact us for pack count, price and availability

Size Range in cm: 2.5 to 50cm
Whatman Cross Reference: 3

MINIMUM ORDER IS REQUIRED, CONTACT US FOR AVAILABILITY

Pack Count:	50
Filter Speed:	Medium Speed
Filtration Speed: Herzberg sec./100mls:	114

Part No.	Description	UOM	est wt.	Quantity In Stock	Price
A23700425	3um Qualitative Standard Filter Discs	EA	0	0^{[*L]Standard lead-time for out-of-stock items is approximately two weeks depending on the item.}	$18.50
[*L] Standard lead-time for out-of-stock items is approximately two weeks depending on the item.
Ordering information. International (non-US) prices available through your local dealer.

2.5um Qualitative Standard Filter Discs

Grade 601 Filter Disc is used for clarifying liquids and for rapid filtration of coarser precipitates such as lead sulfate, lad chromate, calcium oxalate, calcium carbonate, aluminum phosphate, barium carbonate and berylium hydroxide. Ahlstrom 601 can be used in soil analysis, seed testing and air monitoring to collect dust-laden air and is commonly used in the food industry to separate foodstuffs from associated liquid or extracting liquid. For the 1.27cm size please contact us for the pack count, price and availability.

Size Range in cm: 2.5 to 50cm
Whatman Cross Reference: 1

MINIMUM ORDER IS REQUIRED, CONTACT US FOR AVAILABILITY

Pack Count:	100
Filter Speed:	Medium Speed
Filtration Speed: Herzberg sec./100mls:	124

Part No.	Description	UOM	est wt.	Quantity In Stock	Price
A60100250	2.5um Qualitative Standard Filter Discs	EA	0	0^{[*L]Standard lead-time for out-of-stock items is approximately two weeks depending on the item.}	$6.49
[*L] Standard lead-time for out-of-stock items is approximately two weeks depending on the item.
Ordering information. International (non-US) prices available through your local dealer.

4um Qualitative Standard Filter Discs

Grade 609 Filter Disc is an evolution of Ahlstrom 613 for use in the beer industry. This is a filter paper with an extremely low iron and nitrogen content for the analysis of protein in beer.

Size Range in cm: 4.25 to 50cm
Whatman Cross Reference: x

MINIMUM ORDER IS REQUIRED, CONTACT US FOR AVAILABILITY

Pack Count:	100
Filter Speed:	Medium Speed
Filtration Speed: Herzberg sec./100mls:	98

Part No.	Description	UOM	est wt.	Quantity In Stock	Price
A60900425	4um Qualitative Standard Filter Discs	EA	0	0^{[*L]Standard lead-time for out-of-stock items is approximately two weeks depending on the item.}	$6.48
[*L] Standard lead-time for out-of-stock items is approximately two weeks depending on the item.
Ordering information. International (non-US) prices available through your local dealer.

1.5um Qualitative Standard Filter Discs

Grade 610 Filter Disc is a slow flowing filter designed to retain fine particles encountered in qualitative analysis. Ahlstom 610 is widely used for water analysis, biological products and fine precipitates such as cold-precipitated barium sulfate. Ahlstrom 610 is also used in Buchner funnels and to clarify cloudy suspensions.

Size Range in cm: 2.5 to 50cm
Whatman Cross Reference: 5

MINIMUM ORDER IS REQUIRED, CONTACT US FOR AVAILABILITY

Pack Count:	100
Filter Speed:	Slow Speed
Filtration Speed: Herzberg sec./100mls:	1724

Part No.	Description	UOM	est wt.	Quantity In Stock	Price
A61000250	1.5um Qualitative Standard Filter Discs	EA	0	0^{[*L]Standard lead-time for out-of-stock items is approximately two weeks depending on the item.}	$6.66
[*L] Standard lead-time for out-of-stock items is approximately two weeks depending on the item.
Ordering information. International (non-US) prices available through your local dealer.

6um Qualitative Standard Filter Discs

Grade 613 Filter Disc is a strong filter paper with a medium flow rate and retention. Ahlstrom 613 is comonly used in student laboratories. This strong general purpose filter is also useful in Buchner funnels for barium carbonate, lead chromate and beryllium hdroxides. For 2.5cm size please call for pack count, price and availability.

Size Range in cm: 2.5 to 50cm
Whatman Cross Reference: Student Grade

MINIMUM ORDER IS REQUIRED, CONTACT US FOR AVAILABILITY

Pack Count:	100
Filter Speed:	Medium Speed
Filtration Speed: Herzberg sec./100mls:	114

Part No.	Description	UOM	est wt.	Quantity In Stock	Price
A61300425	6um Qualitative Standard Filter Discs	EA	0	0^{[*L]Standard lead-time for out-of-stock items is approximately two weeks depending on the item.}	$5.72
[*L] Standard lead-time for out-of-stock items is approximately two weeks depending on the item.
Ordering information. International (non-US) prices available through your local dealer.

25um Qualitative Standard Filter Discs

Grade 615 Filter Disc is a fast filtering intermediate grade between Ahlstrom 617 & Ahlstrom 631. Ahlstrom 615 has a rough surfaceand is used for filtering aluminum, ferric and magnesium hydroxides. It is also used for general construction filtration work and in the filtration of insoluable iron and ore.

Size Range in cm: 4.25 to 50cm
Whatman Cross Reference: x

MINIMUM ORDER IS REQUIRED, CONTACT US FOR AVAILABILITY

Pack Count:	100
Filter Speed:	Fast Speed
Filtration Speed: Herzberg sec./100mls:	29

Part No.	Description	UOM	est wt.	Quantity In Stock	Price
A61500425	25um Qualitative Standard Filter Discs	EA	0	0^{[*L]Standard lead-time for out-of-stock items is approximately two weeks depending on the item.}	$5.72
[*L] Standard lead-time for out-of-stock items is approximately two weeks depending on the item.
Ordering information. International (non-US) prices available through your local dealer.

35um Qualitative Standard Filter Discs

Grade 617 Filter Disc is an extremely fast and has a larger partical retention than Alstrom 631. Ahlstrom 617, a thicker filter paper with higher loading capacity, is used for rapid filtration of coarse particals and gelatinous precipitates such as oils and resin solutions. Ahstrom 617 is also used in construction project testing and is used by students to retain large flocculents and precpitates.
Fast Filtering Speed

Size Range in cm: 4.25 to 50cm
Whatman Cross Reference: x

MINIMUM ORDER IS REQUIRED, CONTACT US FOR AVAILABILITY

Pack Count:	50
Filter Speed:	Fast Speed
Filtration Speed: Herzberg sec./100mls:	19

Part No.	Description	UOM	est wt.	Quantity In Stock	Price
A61700425	35um Qualitative Standard Filter Discs	EA	0	0^{[*L]Standard lead-time for out-of-stock items is approximately two weeks depending on the item.}	$5.32
[*L] Standard lead-time for out-of-stock items is approximately two weeks depending on the item.
Ordering information. International (non-US) prices available through your local dealer.

10um Qualitative Standard Filter Discs

Grade 631 Filter Disc is used for the filtration of coarse paticles and gelatinous precipitates such as ferric aluminum and magnesium hydroxides. Ahlstrom 631 is used in air monitoring and gas filtration when high flow rate is needed. This grade is also used in routine cleanup analysis of insoluable liquids such as biological fluids and organic elements.
Medium Filtering Speed

Size Range in cm: 2.5 to 50cm
Whatman Cross Reference: 4

MINIMUM ORDER IS REQUIRED, CONTACT US FOR AVAILABILITY

Pack Count:	100
Filter Speed:	Medium Speed
Filtration Speed: Herzberg sec./100mls:	34

Part No.	Description	UOM	est wt.	Quantity In Stock	Price
A63100425	10um Qualitative Standard Filter Discs	EA	0	0^{[*L]Standard lead-time for out-of-stock items is approximately two weeks depending on the item.}	$5.73
[*L] Standard lead-time for out-of-stock items is approximately two weeks depending on the item.
Ordering information. International (non-US) prices available through your local dealer.

2um Qualitative Standard Filter Discs

Grade 642 Filter Disc has a finer partical retention than Ahlstrom Grade 601but with slightly lower medium filtration speed. Ahlstrom 642 also has higher absorbsion than Ahlstrom 601. It is used in general laboratory applications to retain particles above 2um in size. Ahlstrom 642 ia also found in agricultural and environmental laboratories for plany growth trials, soil testing and air analysis for monitoring specific contaminants and in the filrtation of organic and sulfide precipitates.
Medium Filtering Speed

Size Range in cm: 4.25 to 50cm
Whatman Cross Reference: 2

MINIMUM ORDER IS REQUIRED, CONTACT US FOR AVAILABILITY

Pack Count:	100
Filter Speed:	Medium Speed
Filtration Speed: Herzberg sec./100mls:	229

Part No.	UOM	Quantity In Stock	Price
A64200425	---	0^{[*L]Standard lead-time for out-of-stock items is approximately two weeks depending on the item.}	CALL
[*L] Standard lead-time for out-of-stock items is approximately two weeks depending on the item.
Ordering information. International (non-US) prices available through your local dealer.

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28 Aug 2013: Nanoliter Dispensing Devices can be used to place media on the MALDI plates for MALDI/TOF instruments, but the most exciting ability of this device is to collimate droplets directly into the ion source like electrospray (ESI), the unique concept being that nearly 100% of the droplets go directly into the source versus <1% from ESI, giving a huge increase in sensitivity. We believe this could be the next big advance in LC/MS sources. [NEW]
01 June 2013: SIS June Newsletter; ASMS 2013, SIMION/Nist, heated capillary & ion transfer tube for Thermo, and NE-300 syringe pump
26 April 2013: SIS April Newsletter; Micromass/waters , ESI Probe Capillary & Perlast® O-rings [NEW]
06 March 2013: SIS coming to Pittcon 2013; The Bullet blender and the Digivac digital vacuum gauge [NEW]
15 May 2012: Long-life MS Filaments with Yttria coated SISAlloy® (Yttria/Rhenium Alloy) Wire. [NEW]

Yttria coated filament at start
Yttria coated filament after 16,000 cycles
23 April 2012: Rotary vane vacuum pumps and two-stage vacuum filter.
3 April 2012: HPLC: Imtakt columns and NewEra syringe pump
January 2012: New Pumps Added to the List of LOW COST S.I.S. Rotary Vane Vacuum Pumps - Save 35 - 50% off the price of comparable vacuum pumps.
Nov 2011: Telatemp Measurement and Recording Devices The Industry's Most Advanced Temperature Measurement & Recording Products
Oct 2011: Reducing MS Filament Warping (Article/ASMS2011)- A study on reduction of MS filament warping by use of various filament shapes and Yttria/Rhenium alloy. (SIS Application Note #96)
June 2011: Adixen (Alcatel) ACP Series Compact Dry Roughing Pumps - a frictionless pumping module, optimized for operation without internal lubricant.
June 2011: NEW Products from SGE - SilFlow™ 3 Port/4Port Splitters,ConnecTite Inlet Liners, and EC and HT Septa
June 2011: NEW - SISAlloy® (Yttria/Rhenium Alloy) MS Filaments - Mass Spectrometer filaments that reduce or eliminate sagging.
April 2011: NIST 11 Mass Spectral Library (2011 version) - Update includes 242,893 fully evaluated EI mass spectra, GC data, rapidly growing MS/MS spectra (~9,934 ion trap & ~91,557 qtof/tandem-quad collision cell spectra), and enhanced software. Pre-orders taken today.
March 2011: NEW - Handheld Digital Microscope View and capture images or video at 10x/150x power on a PC computer via attached USB cable.
March 2011: OHAUS Moisture Analyzers
Jan 2011:Next-Advance Lab Products - affordable molecular biology instruments that automate mundane tasks, freeing scientists for repetitive, time consuming procedures.
Dec 2010:NEW Filament - Direct Replacement for the Shimadzu QP5000 Filament.
Sept 2010PCI Analytics Products - product solutions for all Analytical Instrumentation
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Jul 2010: SilTite™ FingerTite, the next generation GC capillary ferrule system without the use of any tools. (25% discount until Oct 31)
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Feb 2010: SGE eVol®Hand-held Automated Analytical Syringe - Will improve your laboratory workflow and reporting confidence in many ways
Feb 2010: DigiVac Bench Top Vacuum Gauges - Vacuum instrumentation with everything you need to go to work
Nov 2009: Adam Analytical Balances and Moisture Analyzers.
Nov 2009: Imtakt HPLC Columns -offer a wide variety of unique stationary phases in their HPLC columns
Oct 2009: Advanced Oil-less Rocking Piston Pumps - oil-free, lightweight, low noise
Sep 2009: Programmable syringe pumps for controlled flow. Model NE-300 priced at only $275.00
Sep 2009: NEW: Wiley 9th Edition - 660,000-850,000 spectra (a 65% increase).
Also new: Mass Spectra of Designer Drugs 2009 and Pesticides 2009
Aug 2009: NEW: Agilent 5973/75 Replacement Source Heater and Temperature Sensor
Aug 2009: NEW: SIS™ Direct Replacement Filament for the Amatek/Dycor RGA Leak Detectors and Quadrupoles (p/n 95381VE), which tests have shown increase service life.
Jun 2009: NEW: SIS™ Replacement Filter Elements For Edwards Oil Mist Eliminators - Save up to 25% off the price of comparable Edwards replacement elements.
Jun 2009: NEW: LOW COST S.I.S. Rotary Vane Vacuum Pumps - Save 35 - 50% off the price of comparable vacuum pumps.
Mar 2009: Mass Spec Source Newsletter - Spring 2009.
Mar 2009: New laboratory supply product line
Jun 2009: NIST 08
Identify mass spectra via library search with the fully-evaluated, most widely used mass spectral reference library, compiled by the National Institute of Standards and Technology (NIST).
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Database of 44,008 compounds common in GC analysis, each with name, synonyms, chemical formal, chemical structure diagram, ID/CAS number, and GC retention index data.
, Wiley - MS databases
Feb 2009: Handheld Digital Microscope
View and capture images or video at 20x/400x power on a PC computer via attached USB cable.
Sep 2007: 2008-2009 SIS Scientific Supply Catalog

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