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Nalgene® 1600-0002 Teflon FEP Bottles, 2 oz with EFTE Cap 20-415, case/8
Thermo Scientific Nalgene
Price: $665.90Conduct trace metal analysis, high- and low-temperature work and applications involving organic solvents or rigorous cleaning with Thermo Scientific™ Nalgene™ Narrow-Mouth Bottles Made of...NG-1600-0002Price: $665.90 -
1000mL Bi-Directional Transfer Cap with TPE Tube (50cm1/8" ID 1/4" OD), Heat seal , Vent Filter (0.22um 13.8 cm2), Sterile, case/4
Nest Scientific
Price: $409.321000mL Bi-Directional Transfer Cap with TPE Tube (50cm1/8" ID 1/4" OD), Heat seal , Vent Filter (0.22um 13.8 cm2), for use with Erlenmeyer Flasks, Sterile. The 1000mL Bi-Directional Transfer Cap is...NST-C31121-AZC050BPrice: $409.32 -
75 cm2 Cell Culture Flask, Vent Cap, Non-Treated, Sterile, Maximum Working Volume 250mL, 5 per pack, 100 per case
Nest Scientific
Price: $222.4575 cm2 Cell Culture Flask, Vent Cap, Non-Treated, sterile, Maximum Working Volume 250mL, 5 per pack, 100 per case. Cell culture flasks are available in cell growth areas ranging from 25 cm2 to 225...NST-708013Price: $222.45 -
Kimble® Amber Glass Wide-Mouth Packer Bottles, Shrink Wrapped Bulk-Pack, Bagged Caps, 125mL, Solid PE, case/180
DWK Life Sciences
Price: $390.73KIMBLE® Amber Glass Wide-Mouth Packer Bottles, Bulk Pack, Shrink Modules with Caps in Bags, 125 mL, Solid polyethylene lined screw closures. Wide-mouth design for efficient addition and removal...DWK-5220438C-22Price: $390.73 -
125mL FEP Bottle, Narrow Mouth with Tefzel Closure, Each
Jensen
Price: $143.93125mL FEP Narrow Mouth Bottles with Tefzel ETFE Closures provide excellent temperature and chemical resistance. Extremely chemical-resistant all-fluoropolymer bottles are good for trace metal...JI-BTF5009-0125NPrice: $143.93 -
Wheaton® MicroLiter® OneuL Plate with Assembled Inserts, Snap Red Caps, PTFE / Silicone Stopper, 350ul, Clear, Conical Insert
DWK Life Sciences
Price: $179.25WHEATON® MicroLiter® One µL plate® With Assembled Inserts, Snap Red Caps, PTFE / Silicone Stopper, 350 µL, Clear, Conical Insert, Unit/1 One assembled µLplate® w/...DWK-07-2045R-201-APrice: $179.25 -
Condenser, Double Coil, 895cm², High Efficiency, 45/50 Joints, 400 x 80mm, GL-14 Screw Caps, Removable Hose Connections, each
Chemglass
Price: $1,263.20Condenser, Double Coil, 895cm², High Efficiency, 45/50 Joints, 400 x 80mm, GL-14 Screw Caps, Removable Hose Connections. High efficiency double coil condenser, similar to a rotary evaporator...CG-1219-20Price: $1,263.20 -
8oz Amber Glass Straight Sided Jars, 70-400 Polypropylene F217 & PTFE Lined Caps, case/12
Qorpak
Price: $52.388oz (240ml) Amber Glass Straight Sided Round with 70-400 White Polypropylene F217 & PTFE Lined Cap attached. Amber Straight Sided Round Glass Jars are designed without shoulders for maximum storage...QP-270402Price: $52.38 -
8 oz Cylinder Bottles, HDPE with 24-410 White Polypropylene SturdeeSeal® PE Foam Lined Caps, case/336
Qorpak
Price: $395.638oz (240ml) Natural HDPE Cylinder with 24-410 White Polypropylene SturdeeSeal® PE Foam Lined Cap attached. Natural HDPE Commercial Cylinder Bottles are translucent and impact resistant. They...QP-PLC-04831Price: $395.63 -
Wheaton® MicroLiter® OneuL Plate with Assembled Inserts, Snap Blue Caps, PTFE / Silicone Septa, 2.2 ml, Clear, Round Insert
DWK Life Sciences
Price: $191.78WHEATON® MicroLiter® One µL plate® With Assembled Inserts, Snap Blue Caps, PTFE / Silicone Septa, 2.2 mL, Clear, Round Insert, Unit/1 One assembled µLplate® w/ Snap...DWK-07-8070B-2200-APrice: $191.78 -
Wheaton® MicroLiter® OneuL Plate with Assembled Inserts, Snap Blue Caps, PTFE / Silicone Septa, 1.2 ml, Clear, Round Insert
DWK Life Sciences
Price: $179.82WHEATON® MicroLiter® One µL plate® With Assembled Inserts, Snap Blue Caps, PTFE / Silicone Septa, 1.2 mL, Clear, Round Insert, Unit/1 One assembled µLplate® w/ Snap...DWK-07-8070B-1200-APrice: $179.82 -
16mL (4 Dram) Vial, 21mm OD x 70mm Height, 18-400 Thread Size with PTFE Lined Solid PTFE Black Caps, pack/144
Chemglass
Price: $219.9216mL (4 Dram) Vial, 21mm OD x 70mm Height, 18-400 Thread Size with PTFE Lined Solid PTFE Black Caps. Sample vials packaged in convenient LAB-PACS of 144. Made from Type 1 Borosilicate glass. Full...CG-4900-B-03Price: $219.92 -
Nalgene® 156502 Nunclon Straight Neck Cell Culture Treated Flasks with Standard Cap, Polystyrene, Sterile, 68 ml, 175 Cm2, case/32
Thermo Scientific Nalgene
Price: $396.62Achieve maximum adhesion for a broad range of cell types with Thermo Scientific™ Nunc™ Cell Culture Treated Flasks with Solid Caps. These flasks receive the proprietary Nunclon™...NG-156502Price: $396.62 -
4mL (1 Dram) Vial, 15mm OD x 45mm Height, 13-425 Thread Size with PTFE Lined Solid PTFE Black Caps, pack/144
Chemglass
Price: $198.414mL (1 Dram) Vial, 15mm OD x 45mm Height, 13-425 Thread Size with PTFE Lined Solid PTFE Black Caps. Sample vials packaged in convenient LAB-PACS of 144. Made from Type 1 Borosilicate glass. Full...CG-4900-B-01Price: $198.41 -
3L High Efficiency Inverted Transfer Cap with TPE Tube ( 50cm 1/4" ID 7/16" OD), Vent Filter (0.22um x 42mm), Sterile, case/4
Nest Scientific
Price: $475.043L High Efficiency Inverted Transfer Cap with TPE Tube ( 50cm 1/4" ID 7/16" OD), Vent Filter (0.22um x 42mm), for use with Erlenmeyer Flasks, Sterile. The inverted transfer cap is used along with a...NST-C10233-DZC050BPrice: $475.04 -
3L High Efficiency Inverted Transfer Cap with TPE Tube (50cm 1/8" ID 1/4" OD), Vent Filter (0.22um x 42mm), Sterile, case/4
Nest Scientific
Price: $390.493L High Efficiency Inverted Transfer Cap with TPE Tube (50cm 1/8" ID 1/4" OD), Vent Filter (0.22um x 42mm), for use with Erlenmeyer Flasks, Sterile. The inverted transfer cap is used along with a...NST-C10231-AZC050BPrice: $390.49 -
5L High Efficiency Inverted Transfer Cap with TPE Tube (90cm 1/8" ID 1/4" OD), Vent Filter (0.22um x 42mm), Sterile, case/4
Nest Scientific
Price: $475.485L High Efficiency Inverted Transfer Cap with TPE Tube (90cm 1/8" ID 1/4" OD), Vent Filter (0.22um x 42mm), for use with Erlenmeyer Flasks, Sterile. The inverted transfer cap is used along with a...NST-C10431-AZC090BPrice: $475.48 -
Nalgene® Coded Cryobank Vial Systems, 2D Coded, Racked, 0.5 ml, Blue Cap, case/10
Thermo Scientific Nalgene
Price: $1,695.43Take traditional cryostorage to the next level while accommodating denser storage capability compared to standard cryoboxes. Thermo Scientific™ Nunc™ Coded Cryobank Vial Systems feature...NG-374025Price: $1,695.43 -
2L High Efficiency Multifunctional Transfer Cap with TPE Tube ( 50cm 1/4" ID 7/16" OD), Vent Filter (0.22um x 24mm), Sterile, case/4
Nest Scientific
Price: $769.082L High Efficiency Multifunctional Transfer Cap with TPE Tube ( 50cm 1/4" ID 7/16" OD), Vent Filter (0.22um x 24mm), for use with Erlenmeyer Flasks, Sterile. Features: It is pre-installed on the...NST-C10111-DZB050BPrice: $769.08 -
16oz (480 ml) ValuLine Clear Glass Boston Round with 28-400 White Polypropylene F217 & PTFE Lined Cap, case/12
Qorpak
Price: $33.6216oz (480ml) ValuLine Clear Boston Round with 28-400 White Polypropylene F217 & PTFE Lined Cap attached. Classic narrow mouth boston round style bottles are ideal for storing liquids. ValuLine caps...QP-239207Price: $33.62 -
Microcentrifuge Tubes, 1.5mL Graduated Screw Cap Tube, Conical Base, Writing Area, Clear, case/5000
CP Lab Safety
Price: $639.67These 1.5 mL microcentrifuge tubes feature a graduated scale for accurate sample measurement, a screw cap for secure sealing, and a writing area for easy labeling. The clear polypropylene material...BP-4202G-CASEPrice: $639.67 -
Erlenmeyer Flasks with Screw Cap, Autoclavable Polycarbonate, Sterile, 1000 ml, case/6
Dynalon
Price: $265.03Erlenmeyer Flasks with Screw Cap, Autoclavable PC, Sterile, 1000mL. Erlenmeyer flasks are made from clear break resistant Lexan® polycarbonate and are available either with or without baffles...DL-641934-1000FPrice: $265.03 -
16 oz Glass Boston Round Bottles, 28-400 Black Phenolic Pulp/Vinyl Lined Caps, case/60
Qorpak
Price: $204.7316oz (480ml) Clear Boston Round with 28-400 Black Phenolic Pulp/Vinyl Lined Cap attached. Clear Glass Boston Round Bottles offer maximum visibility and sample integrity. These general use bottles are...QP-GLC-01204Price: $204.73 -
2oz Amber Glass Straight Sided Jars, 53-400 Polypropylene F217/PTFE Lined Caps, case/24
Qorpak
Price: $64.922oz (60ml) Amber Glass Straight Sided Round with 53-400 White Polypropylene F217/PTFE Lined Cap Attached. Amber Straight Sided Round Glass Jars are designed without shoulders for maximum storage...QP-271835Price: $64.92 -
Rectangular Carboy with Spigot and Handle, Autoclavable Polypropylene, White Polypropylene Cap, 20 Liter, Graduated
Globe Scientific
Price: $236.18Rectangular Carboy with Spigot and Handle, PP, White PP Screw Cap, 20 Liter, Molded Graduations, Autoclavable. Diamond® RealSeal™ Plastic Carboys from Globe Scientific meet the large volume...GSCI-7300020Price: $236.18 -
5L High Efficiency Multifunctional Transfer Cap with TPE Tube ( 90cm 1/4" ID 7/16" OD), Vent Filter (0.22um x 24mm), Sterile, case/4
Nest Scientific
Price: $560.155L High Efficiency Multifunctional Transfer Cap with TPE Tube ( 90cm 1/4" ID 7/16" OD), Vent Filter (0.22um x 24mm), for use with Erlenmeyer Flasks, Sterile. It is pre-installed on the High...NST-C10411-DZB090BPrice: $560.15 -
1oz Wide Mouth Round Bottles, HDPE, 28-400 Polypropylene SturdeeSeal® PE Foam Lined Caps, case/1650
Qorpak
Price: $1,096.241oz (30ml) Natural HDPE Wide Mouth Round Bottles with 28-400 White Polypropylene SturdeeSeal® PE Foam Lined Cap attached. Natural HDPE Wide Mouth Round Bottles are ideal for general lab use with...QP-PLC-03555Price: $1,096.24 -
2oz Wide Mouth Round Bottles, HDPE, 33-400 Polypropylene SturdeeSeal® PE Foam Lined Cap, case/850
Qorpak
Price: $613.402oz (60ml) Natural HDPE Wide Mouth Round Bottles with 33-400 White Polypropylene SturdeeSeal® PE Foam Lined Cap attached. Natural HDPE Wide Mouth Round Bottles are ideal for general lab use with...QP-PLC-03564Price: $613.40 -
Nalgene® 1600-0064 Teflon FEP Bottles, 64 oz with EFTE Cap 38-430, case/2
Thermo Scientific Nalgene
Price: $1,116.83Conduct trace metal analysis, high- and low-temperature work and applications involving organic solvents or rigorous cleaning with Thermo Scientific™ Nalgene™ Narrow-Mouth Bottles Made of...NG-1600-0064Price: $1,116.83 -
5mL Sterile Disposable Sampler Tubes with Double-Threaded Screw Caps on, Sterile, 50 per pack, 1000 per case
Nest Scientific
Price: $349.055mL Sterile Disposable Sampler Tubes with Double-Threaded Screw Caps on, Sterile, 50 per pack, 1000 per case. Transport tubes are used in multiple sectors of the laboratory market, including...NST-619101Price: $349.05 -
Nalgene® 156340 Nunclon Angled Neck Cell Culture Treated Flasks with Vent Cap, Polystyrene, Sterile, 7 ml, 25 Cm2, case/200
Thermo Scientific Nalgene
Price: $616.70Enhance cell attachment, growth and differentiation with Thermo Scientific™ Nunc™ Cell Culture Treated EasYFlasks™. These polystyrene flasks receive the proprietary Nunclon™...NG-156340Price: $616.70 -
Wheaton® MicroLiter® Component Kit, Conical Concentrator Vials, Borosilicate Glass with Cap and Bonded Septa, 15 x 51mm, Clear, Pack/100
DWK Life Sciences
Price: $434.66WHEATON® MicroLiter® Component Kit, Conical Concentrator Vial With Cap and Bonded Septa, 15 x 51mm, Clear, Pack/100 Clear and amber vials are converted from USP Type I borosilicate glass...DWK-13-4061KPrice: $434.66 -
68oz (2000 ml) HDPE Wide Mouth Round, 89-400 Polypropylene SturdeeSeal® PE Foam Lined Cap, case/50
Qorpak
Price: $271.1368oz (2000ml) Natural HDPE Wide Mouth Round Bottles with 89-400 White Polypropylene SturdeeSeal® PE Foam Lined Cap attached. Natural HDPE Wide Mouth Round Bottles are ideal for general lab use...QP-PLC-03619Price: $271.13 -
Clear Borosilicate Glass Vials, 23 x 85, 6 dram, 20-400 Phenolic Pulp/Vinyl Lined Caps, case/144
Qorpak
Price: $206.9823 x 85mm 6 dram (22ml) Clear Borosilicate Vial with 20-400 Black Phenolic Pulp/Vinyl Lined Cap attached. Clear Screw Thread Vials offer maximum visibility. These general purpose glass Vials are made...QP-GLC-04880Price: $206.98 -
Kimble® Clear Glass Boston Round Bottles, Shrink Wrapped Bulk-Pack, Bagged Caps, 125mL, PTFE-Faced LDPE Foam, case/160
DWK Life Sciences
Price: $278.43KIMBLE® Bulk Pack, Shrink Modules with Caps in Bags, 125 mL, PTFE-Faced LDPE Foam lined screw closures. Narrow-mouth design for safe pouring Helps to eliminate waste and ensures product integrity...DWK-5110422C-26Price: $278.43 -
1.75" x 4.5" Cardboard Specimen Tube Mailer, 2oz (60mL) HDPE WM Bottle with 33-400 White PP Foam Lined Cap, case/24
Qorpak
Price: $211.571.75" x 4.5" Fiberboard Specimen Mailer 2oz (60ml) HDPE WM Round with 33-400 White Polypropylene SturdeeSeal® PE Foam Lined Cap attached. Fiberboard Specimen Mailers meets government regulations...QP-PLC-03565Price: $211.57 -
17oz (500 ml) Clear PET Packer Bottles, 45-400 Polypropylene SturdeeSeal® PE Foam Lined Caps, case/140
Qorpak
Price: $310.6417oz (500ml) Clear PET Packer with 45-400 White Polypropylene SturdeeSeal® PE Foam Lined Cap attached. Clear PET Packer Bottles provide a good alcohol and solvent barrier. These clear and...QP-PLC-06877Price: $310.64 -
225 cm2 Cell Culture Flask, Plug Seal Cap, Non-Treated, Sterile, Maximum Working Volume 950mL, 5 per pack, 25 per case
Nest Scientific
Price: $147.24225 cm2 Cell Culture Flask, Plug Seal Cap, Non-Treated, sterile, Maximum Working Volume 950mL, 5 per pack, 25 per case. Cell culture flasks are available in cell growth areas ranging from 25 cm2 to...NST-721011Price: $147.24 -
75 cm2 Cell Culture Flask, Plug Seal Cap, Non-Treated, Sterile, Maximum Working Volume 250mL, 5 per pack, 100 per case
Nest Scientific
Price: $198.2175 cm2 Cell Culture Flask, Plug Seal Cap, Non-Treated, sterile, Maximum Working Volume 250mL, 5 per pack, 100 per case. Cell culture flasks are available in cell growth areas ranging from 25 cm2 to...NST-708011Price: $198.21 -
Nalgene® 2087-0001 General-Use Economy Bottles, PPCO with Polypropylene Screw Caps, 1 oz, case/72
Thermo Scientific Nalgene
Price: $109.72Perform light-duty, general-purpose applications where a heavier bottle is not required with Thermo Scientific™ Nalgene™ Narrow-Mouth PPCO Economy Bottles with Closure. These...NG-2087-0001Price: $109.72
Featured
2-Port Solvent Delivery Port Cap Deluxe Kit for GL45 Media Bottles, Black with Air Valve and 1/8" Tubing Adapter
CP Lab Safety
Price:
$60.00
2-Port Safety Cap Deluxe Kit, GL45 Thread, Black Outer, ready-to-use with Air Inlet Valve and and 1/8" OD tubing adapter. All you need to supply is the 1/8" OD tubing and you're ready to work! Create...
ALW-GL45-2KIT
Air Inlet Evaporation Control Valve, 1/4-28 PTFE with Reminder Timer
CP Lab Safety
Price:
$34.69
Air Inlet Evaporation Control Valve with Reminder Timer (PTFE, 1/4-28)
Safeguard Your Solvent Delivery System
This valve combines solvent protection with a convenient reminder...
ALW-Air-Valve
Port Cap Kit for Solvent Delivery, GL45 with (4) 1/4-28 UNF Threaded Ports, Yellow, includes Plugs
CP Lab Safety
Price:
$49.00
4-Port Solvent Delivery Port Cap Kit for GL45 Media Bottles, Yellow, with Plugs, for use with 1/8" or 1/16" OD tubing in 1/4-28 adapters. Create a closed system with GL-45 safety caps, which seal to...
ALW-GL45-4KIT
Port Cap Kit for Solvent Delivery, GL45 with (3) 1/4-28 UNF Threaded Ports, Red, includes Plugs
CP Lab Safety
Price:
$49.00
3-Port Solvent Delivery Port Cap Kit for GL45 Media Bottles, Red, with Plugs, for use with 1/8" or 1/16" OD tubing in 1/4-28 adapters. Create a closed system with GL-45 safety caps, which seal to a...
ALW-GL45-3KIT
TELLI Talking Electronic Liquid Level Indicator for Overflow Prevention
CP Lab Safety
Price:
$199.00
Try TELLI® (patent pending) to keep your lab safe from spills and overflow! TELLI is a "non-contact" liquid level mea
CP-Telli-01
2-Port Cap, GL-45 for 3/16" tubing, Air inlet valve for Solvent Delivery
CP Lab Safety
Price:
$81.00
Please note: This is a custom cap design with a minimum order of 10 pieces. Please inquire for discount pricing on larger purchases (25 or more.)
2-Port Cap for 3/16" OD tubing for Solvent Delivery,...
WF-SV-1242-2KIT
10-Port Cap, FS-70 (70mm) closure for Rieke / Hedwin Drums
CP Lab Safety
Price:
$306.00
Replacement for WF-FS70-KIT, now with 10 holes. This 10-Port Carboy Cap, 70mm (Rieke FS-70 NPS, 8TPI), Complete Kit with (1) 1/2" plug, (3) 1/4" plugs and (6) 1/4-28 Plugs. Fits the 70mm opening on...
WF-FS70-10KIT
2-Port Cap, GL-45 with Air inlet valve for Solvent, Delivery
CP Lab Safety
Price:
$70.00
2-Port Solvent Delivery Cap Kit, GL45 with (2) 1/4-28 ports and a built-in air inlet valve. Choose adapters for 1/8" or 1/16" OD tubing separately (part numbers WF-AQ-1-8 and WF-AQ-1-16.) Includes...
WF-GL45-AI-2KIT
Drum Feed Safety Clamp with Chemical Filter (Choose Color)
Chemical Feed Safety Supply
Price:
$45.00
A safe, fast, effective way to increase the safety of your chemical feed system. Clamp is made of polypropylene and available in many colors to reduce cross-contamination of chemicals, by...
CFS-1117-BLUE
ECO Battery Bin-Test, Store & Recycle AA, AAA, C, D Batteries
CP Lab Safety
Now:
$39.99
Quickly check the power level remaining in most consumer batteries! The ECO Battery Bin is an environmentally friendly way to test and dispose of consumer batteries. It is a battery recycling device...
ECO-BB
4-Port Cap for Glass Bottle, GL-45, Complete Kit
CP Lab Safety
Price:
$45.00
Port Cap with 4 ports (1/4-28), PTFE insert, and blue Polypropylene collar. Fits glass bottles with a GL45 neck size. A set of plugs in included to maintain a closed system when holes are not in use...
WF-GL45-4KIT
3-Port Cap for Glass Bottle, GL-45, Complete Kit
CP Lab Safety
Price:
$50.00
Port Cap with 3 ports (1/4-28), PTFE insert, and blue Polypropylene collar. Fits glass bottles with a GL45 neck size. A set of plugs in included to maintain a closed system when holes are not in use...
WF-GL45-3KIT
4-Port Cap for Glass Bottle, GL38, Complete Kit
CP Lab Safety
Price:
$50.00
Waste line delivery port cap with 4 ports (1/4-28) fits glass bottles with a GL38 neck size. Choose your own adapters based on the tubing size you are using. A set of plugs in included for each port...
WF-GL38-4KIT
2-Port Cap for Glass Bottle, GL38, Complete Kit
CP Lab Safety
Price:
$41.00
Waste line delivery port cap with 2 ports (1/4-28) fits glass bottles with a GL38 neck size. Choose your own adapters based on the tubing size you are using. A set of plugs in included for each port...
WF-GL38-2KIT
Port Cap Carbon Filter, Activated Carbon with Flexible Adapter, 1/2" NPT
CP Lab Safety
Price:
$78.00 - $112.00
Reduce toxic fumes and noxious odors from HPLC solvent waste by vapor capture onto activated carbon exhaust filters. Includes 1 activated carbon filter, medium size, with flexible adapter,...
WF-CF-100KIT
10-Port Cap/ Filling Cap, 83B Carboy Cap, Complete Kit
CP Lab Safety
Price:
$207.00
Carboy Port Cap/ Filling Cap, 10 Port 83B Carboy Cap, Complete Kit with (1) 1/2" plug, (3) 1/4" plugs and (6) 1/4-28 Plugs. Features a PTFE waste manifold with free-spinning (non-wetted)...
WF-83B-KIT
10-Port Cap, Waste Manifold, 70mm for Nalgene® Carboy, Complete Kit
CP Lab Safety
Price:
$349.00
This 70mm Carboy Waste Cap with 10 ports is a slight update from the previous 7-port version. Vapor tight caps are designed to fit standard 70mm carboys from Thermo Fisher Nalgene®. Complete Kit...
WF-70NAL-10KIT
2- Port Cap/ Filling Cap for Nalgene® 38-430 Bottles, Complete Kit
CP Lab Safety
Price:
$37.00
Port Cap for Nalgene Plastic Bottles with a 38-430 bottles, 2-port, with (2) 1/4-28 female ports, PTFE insert with Polypropylene collar. Choose adapters based on your tubing size. A set of plugs in...
WF-38-2KIT
4" ECO Funnel® with 38-430mm cap adapter for 38mm bottles
ECO Funnel
Price:
$147.00
ECO Funnel® is the original screw-on safety funnel with a lid for laboratory waste disposal. Each model fits a specific container. This 4" ECO Funnel is designed to fit heavy-duty plastic bottles...
EF-4-38