FILTERS (GLASS FIBER)

Transcription

1 427 Whatman GMF-150 Glass Microfibre Whatman has developed a new filter medium by combining two microfiber filters in one. Manufactured from 100% borosilicate glass microfibres, the filter is binder free and unique in its construction: a course layer on top of, and meshed with, a fine layer. This filtration technique allows for F1550 higher particle loading capacity, faster flow rate and and life extendance of the filter. Multiple porosities means greater filtration efficiency. The Multigrade GMF-150 represents the new dimension in separation science leading to faster and more cost effective filtration. In application, the Multigrade traps larger particles in the pores or on the surface of the coarse layer while the medium-sized particles are caught in the interface meshing. The smaller particles are netted in the interstices of the fine layer. Tests have proven that the Multigrade GMF-150, used as a prefilter, nearly doubles the volume of sample filtered compared to a single density prefilter. Conventional filters cannot perform up to the same caliber as the Multigrade GMF-150 simply because prefilters of a uniform density do not have the loading capacity of the multiporosity filter. Whatman. (CGJLMT) Cat. No. Mfg. No. Diameter(cm) Retention Qty/bx Price/bx F m 40 $40.30 F m 20 $40.30 F m 100 $40.30 F m 100 $40.30 QM Quartz Microfibre Air Sampling Filters. Whatman High purity quartz (SiO2) microfibre filters are used for air sampling in acidic gases, stacks, flues and aerosols, particularly at high temperatures up to 500 C and in PM10 testing. Because of the low level of alkalin earth metals, "artifact" products of sulfates and nitrates (from SO2 and NO2) are F1555 virtually eliminated. 8 x 10 in. sheets of QM-A type filters are available sequentially numbered according to EPA standards, and are suitable for most applications; QM-B type filters are for use when double thickness and increased strength and retention is required. QM-B type filters are available only in 8 x 10 in. sheets. Circle filters come 100 Filters/Box. Plain 8 x 10 in. sheets come 25 Filters/Box. Pre-numbered 8 x 10 in. QM-A sheets come 100 Sheets/Box. Whatman. (CGJLMT) F cm 100 $79.10 F cm 100 $95.10 F cm 100 $ F cm 100 $ F x 10 in. Sheets 100 $ F x 10 in. Sheets, Pre-numbered 100 $ Whatman 934-AH Glass Microfibre Curved Forceps w/medium Fine Tips. Stainless Steel Curved Forceps w/medium Fine Tips. Stainless Steel. Fine serrations on handle, smooth tips. Without guide pin. Length, 152mm. Walter Stern. (GMT) D1983 Cat. No. Mfg. No. Description Qty Price D Curved Forceps w/medium Fine Tips 1 $6.25 Air Sampling Filters, EPM Whatman Whatman EPM 2000 Glass Microfiber Filters have been developed and produced especially for use in high volume PM-10 air sampling equipment that collects atmospheric particulates and aerosols. It is manufactured from 100% pure borosilicate glass of special purity enabling detailed chemical F1552 analysis of trace pollutants to take place with the minimum of interference or background. EPM 2000 filters are available in either a 4.7cm circle filter or an 8 x 10 in. sheet. Both sizes come 100/Box. Whatman EPM 2000 was selected by the EPA to be the standard filter for use in the nationwide network of HiVol air samplers. Sheets are individually numbered to facilitate identification. Whatman. (CGJLMT) F cm 100 $32.85 F x 10 in. Sheet 100 $ Whatman 934-AH. The fine particle retention (1.5 µm) and flow rate (13.0 ml/sec) of this popular grade is superior for its high retention efficiency at high flow rates and its high loading capacity. This filter is a smooth surface, high retention borosilicate glass microfiber which withstands temperatures F1560 over 500 C. Specified in Standard Methods 2540D for determining total suspended solids in water, removal of turbidity and filtration of bacterial cultures. Grade 934-AH is used for a wide range of laboratory applications. It is recommended for water pollution monitoring, cell harvesting, liquid scintillation counting and air pollution monitoring. Whatman. (CGJLMT) F $17.05 F $19.00 F $19.00 F $20.80 F $22.35 F $24.70 F $24.70 F $27.05 F $33.80 F $35.60 F $44.60 F $59.10 F $83.60 F $83.60 F $ F $ F $ F $ F $ F in. X 12.0 in. 100 $81.90 F in. X 10.0 in. 100 $ F in. X 15.0 in. 100 $ F in. X 28.0 in. 100 $1,294.70

2 428 GF/A Glass Microfiber Filters. Whatman Whatman GF/A glass microfibre filters offer fine particle retention (1.6 µm) and high flow rate, as well as good loading capacity. Used for high efficiency general purpose laboratory filtration, including water pollution monitoring of effluents, for filtration of water, algae and bacteria cultures, foodstuff analyses, protein F1580 filtration and radioimmunoassay of weak ß emitters. Recommended for gravimetric determination of airborne particulates, stack sampling and absorption methods of air pollution monitoring. 100 circles/box. Whatman. (CGJLMT) F $21.12 F $21.22 F $21.22 F $24.50 F $26.10 F $29.00 F $30.90 F $37.25 F $56.10 F $88.60 F $ F $ GF/C Glass Microfibre Filters. Whatman Whatman No. GF/C combines fine particle retention (1.2 µm) with good flow rate. The standard filter in many parts of the world for the collection of suspended solids in potable water and natural and industrial wastes. Fast and efficient clarification of aqueous liquids containing low to medium levels of fine particulates. Widely used F1620 for cell harvesting, liquid scintillation counting and binding assays where more loading capacity is required. Whatman. (CGJLMT) F $43.25 F $45.10 F $45.10 F $51.40 F $51.40 F $68.75 F $70.30 F $88.60 F $ F $ F $ F $ GF/D Glass Microfiber Filters. Whatman GF/B Glass Microfiber Filters. Whatman Whatman No. GF/B is three times thicker than GF/A with higher wet strength and significantly increased loading capacity. Combines fine particle retention (1.0 µm) with good flow rate. Particularly useful where liquid clarification or solids quantification is required for heavily loaded fine particulate suspensions. Can be F1600 used as a finely retentive membrane prefilter. Used in LSC techniques where high loading capacity is required. Whatman. (CGJLMT) F $37.10 F $38.10 F $41.70 F $51.00 F $55.60 F $66.00 F $71.40 F $95.60 F $35.10 F $48.70 F $62.30 F $93.60 Whatman No. GF/D is considerably faster in flow rate and overall filtration speed than cellulose filter papers of similar particle retention (2.7 µm). The filter is thick and consequently exhibits a high loading capacity. Designed as a membrane prefilter and available in sizes to fit most holders. GF/D will provide good protection for F1640 finely retentive membranes. Can be used in combination with GF/B to provide very efficient graded prefilter protection for membranes. Whatman. (CGJLMT) F $24.60 F $24.60 F $24.60 F $24.60 F $27.45 F $31.95 F $37.25 F $42.75 F $59.70 F $24.70 F $32.85 F $45.10 F $75.00 F $99.50

3 429 GF/F Glass Microfiber Filters. Whatman Whatman No. GF/F is a high efficiency filter that will retain fine particles down to 0.7µm. Unlike membrane filters with a comparable retention value, it has a very rapid flow rate and an extremely high loading capacity. Suitable for critical applications including enumeration of Salmonella and Pseudomonas Aeroginosa, F1660 clarification of protein solutions and filtering samples and solvents prior to HPLC. Because of the tight specification of 0.6µm-0.8µm particle retention and pure borosilicate glass structure, GF/F is the material upon which the EPA Method TCLP 1311 for Toxicity Characteristic Leaching Procedure was developed. It remains today the filter of choice. Recommended for DNA binding and purification. Very effective in filtering finely precipitated proteins, GF/F can be used in conjunction with GF/D as a prefilter for the successful clarification of extremely "difficult" biochemical solutions and fluids, and nucleic acids. Whatman. (CGJLMT) F $68.25 F $71.40 F $75.00 F $87.80 F $95.60 F $ F $ F $ F $49.20 F $73.10 F $86.70 F $ F $ F $ Ahlstrom 121 Medium Speed Glass Microfiber Grade 121 is a very thick grade that offers finer particle retention than Ahlstrom 111 with high wet-strength and for the clarification of liquid suspensions loaded with fine particulates. Also used in membrane pre-filtration and is also found in quantification of F1665B solids, and LSC (Liquid Scintillation Counting) techniques that require high loading capacity. Ahlstorm. (GMTJ) F1665B $33.94 F1665B $35.14 F1665B $35.14 F1665B $46.67 F1665B $53.22 F1665B $61.53 F1665B $70.53 F1665B $86.09 F1665B $ F1665B $ F1665B $ F1665B $ F1665B $ F1665B $ F1665B $ F1665B $ Ahlstrom 111 Fast Speed Glass Microfiber Filter Ahlstrom 111: 1.2µm - Fast Speed. This grade offers fine particle retention with high filtration speed and good loading capacity. Used in general laboratory filtration including atmospheric and water pollution monitoring such as intake controls, ozone-level, and water effluents. Grade 111 is also well F1665A suited for filtration of water and protein, testing of algae, bacteria cultures and for radioimmunoassay with weak beta emitters. Also recommended for filtering solvents in a high-resolution laboratory. Ahlstorm. (GMTJ) F1665A $24.37 F1665A $25.65 F1665A $25.65 F1665A $27.14 F1665A $30.15 F1665A $33.76 F1665A $36.55 F1665A $43.77 F1665A $61.38 F1665A $81.66 F1665A $ F1665A $ F1665A $ F1665A $ Ahlstrom 131 Medium Speed Glass Microfiber Ahlstrom 131, 1.0µm - Medium Speed is the standard grade found in many environmental applications offers slightly more retention than Ahlstrom 111 with slightly lower filtration speed and for the collection of suspended solids in potable water and in F1665C industrial wastes. In biochemical tests, suited for cell harvesting, liquid scintillation counting and the analysis of carbohydrates. Ahlstorm. (GMTJ) F1665C $35.70 F1665C $37.48 F1665C $37.48 F1665C $45.82 F1665C $45.82 F1665C $53.30 F1665C $63.06 F1665C $79.32 F1665C $94.55 F1665C $ F1665C $ F1665C $ F1665C $ F1665C $473.00

4 430 Ahlstrom 141 Fast Speed Glass Microfiber Filter Ahlstrom 141, 3.1µm - Fast Speed offers better filtration speed and a higher loading capacity than an analytical filter paper of similar particle retention. Particularly recommended for pre-filtration of membrane filters and is also used in combination with Ahlstrom 121 as a highly F1665D efficient protective and retentive grade density pre-filter for membrane filters. Ahlstorm. (GMTJ) F1665D $31.51 F1665D $31.51 F1665D $31.51 F1665D $36.58 F1665D $36.57 F1665D $42.90 F1665D $52.90 F1665D $69.74 F1665D $ F1665D $ F1665D $ F1665D $ F1665D $ F1665D $ F1665D $ Ahlstrom 161 Medium Speed Glass Microfiber Ahlstrom 161, 1.1µm - Medium Speed. This popular grade offers finer particle retention and higher flow rate than traditional analytical filter papers. Used in general laboratory applications, cell harvesting, liquid scintillation counting, and in the monitoring of air and water pollution. F1667 Generally recommended for water pollution monitoring techniques for total suspended solids method 209. Ahlstorm. (GMTJ) F $21.40 F $21.96 F1667-2A $21.96 F1667-2B $22.63 F1667-2C $23.26 F1667-2D $23.26 F1667-2E $25.83 F1667-2F $26.50 F $29.03 F $31.16 F1667-4A $35.99 F $44.22 F $57.35 F1667-6A $70.64 F $76.34 F $99.97 F $ F $ F $ F $ F $ Ahlstrom 151 Slow Speed Glass Microfiber Ahlstrom 151, 0.7µm - Slow Speed is a high performance grade designed to retain extremely fine particles down to 0.7 µm. Has retention comparable to membrane filters while providing higher flow and for filtering fine precipitated proteins. In the filtration of F1665E nucleic acids and difficult biochemical solutions, Ahlstrom 151 is used in combination with Ahlstrom 141 as a highly efficient protective and retentive pre-filter to extend the loading capacity of membrane filters. Grade 151 is recommended for use in TCLP testing as described in test methods for evaluating solid wastes, EPA method Ahlstorm. (GMTJ) F1665E $43.40 F1665E $45.26 F1665E $45.26 F1665E $46.67 F1665E $53.67 F1665E $60.41 F1665E $66.40 F1665E $88.99 F1665E $ F1665E $ F1665E $ F1665E $ F1665E $ F1665E $ F1665E $1, Ahlstrom 111 Fast Speed Glass Microfiber Filter Ahlstrom 111, 1.2µm - Fast Speed. This grade offers fine particle retention with high filtration speed and good loading capacity. Used in general laboratory filtration including atmospheric and water pollution monitoring such as intake controls, ozone-level, and water effluents. Grade 111 is also well F1667A suited for filtration of water and protein, testing of algae, bacteria cultures and for radioimmunoassay with weak beta emitters. Also recommended for filtering solvents in a high-resolution laboratory. Ahlstorm. (GMTJ) F1667A $24.37 F1667A $25.65 F1667A $25.65 F1667A $27.14 F1667A $30.15 F1667A $33.76 F1667A $36.55 F1667A $43.77 F1667A $61.38 F1667A $81.66 F1667A $ F1667A $ F1667A $ F1667A $363.79

5 431 Ahlstrom 121 Medium Speed Glass Microfiber Ahlstrom 121, 1.0µm - Medium Speed. This very thick grade offers finer particle retention than F1667A with high wet strength and loading capacity. Recommended for the clarification of liquid suspensions loaded with fine particulates. Used in membrane pre-filtration and is also found in F1667B quantification of solids, and LSC (Liquid Scintillation Counting) techniques that require high loading capacity. Ahlstorm. (GMTJ) F1667B $33.94 F1667B $35.14 F1667B $35.14 F1667B $46.67 F1667B $53.22 F1667B $61.53 F1667B $70.53 F1667B $86.09 F1667B $ F1667B $ F1667B $ F1667B $ F1667B $ F1667B $ F1667B $ F1667B $ Ahlstrom 141 Fast Speed Glass Microfiber Filter Ahlstrom 141, 3.1µm - Fast Speed. This grade offers better filtration speed and a higher loading capacity than an analytical filter paper of similar particle retention. Recommended for pre-filtration of membrane filters and is also used in combination with F1667 as a highly efficient protective F1667D and retentive grade density pre-filter for membrane filters. Ahlstorm. (GMTJ) F1667D $31.51 F1667D $31.51 F1667D $31.51 F1667D $36.58 F1667D $36.57 F1667D $42.90 F1667D $52.90 F1667D $69.74 F1667D $ F1667D $ F1667D $ F1667D $ F1667D $ F1667D $ F1667D $ Ahlstrom 151 Slow Speed Glass Microfiber Ahlstrom 131 Medium Speed Glass Microfiber Ahlstrom 131: 1.0µm - Medium Speed. This standard grade found in many environmental applications offers slightly more retention than F1667A with slightly lower filtration speed and loading capacity. Recommended for the collection of suspended solids in potable water and in industrial F1667C wastes. In biochemical tests, suitable for cell harvesting, liquid scintillation counting and the analysis of carbohydrates. Ahlstorm. (GMTJ) F1667C $35.70 F1667C $37.48 F1667C $37.48 F1667C $45.82 F1667C $45.82 F1667C $53.30 F1667C $63.06 F1667C $79.32 F1667C $94.55 F1667C $ F1667C $ F1667C $ F1667C $ F1667C $ Ahlstrom 151, 0.7µm - Slow Speed. This high performance grade is designed to retain extremely fine particles down to 0.7 µm. Has retention comparable to membrane filter while providing higher flow and for filtering fine precipitated proteins. In the filtration of F1667F nucleic acids and difficult biochemical solutions, F1667F is used in combination with F1667D as a highly efficient protective and retentive pre-filter to extend the loading capacity of membrane filters. Grade 151 is recommended for use in TCLP procedure as described in test methods for evaluating solid wastes, EPA method Ahlstorm. (GMTJ) F1667F $43.40 F1667F $45.26 F1667F $45.26 F1667F $46.67 F1667F $53.67 F1667F $60.41 F1667F $66.40 F1667F $88.99 F1667F $ F1667F $ F1667F $ F1667F $ F1667F $ F1667F $ F1667F $1,187.04