VEE GEE 6168-4722 is the replacement fritted glass support base for SIBATA 6168 series filter systems, sold individually. This is the self-contained glass base with a fused coarse-frit glass disk that directly supports the 47 mm filter membrane — used in the 6168-0001 (300 mL fritted glass kit) and 6168-0003 (100 mL fritted glass kit). The fritted glass disk is permanently fused into the base body; no separate screen or gasket is needed. Autoclavable at 121°C. For labs that need to replace a cracked or contaminated fritted base without purchasing a full new filter kit. Base only — funnel, stopper, and clamp sold separately.
Features & Benefits
- Fused Coarse-Frit Glass Support — No Additional Screen Required: The 6168-4722 has a coarse-frit glass disk permanently fused into the base body. Unlike the SS screen base system, no separate screen or gasket components are needed — just place the filter membrane on the fritted surface and clamp the funnel in place.
- Standard Base for General and Biological Filtration: The fritted glass support base is the conventional choice for water quality analysis, bacteriological membrane filtration, suspended solids determination, and general lab filtration — matching the configuration used in the majority of 47 mm filtration setups described in Standard Methods, EPA methods, and ISO 18593.
- Compatible with Both 100 mL and 300 mL Funnels: The 6168-4722 fritted base is used in both the 100 mL kit (6168-0003) and the 300 mL kit (6168-0001) — it fits both the 100 mL funnel (6168-47100) and the 300 mL funnel (6168-4711), secured by the same clamp (6168-4762).
- Borosilicate Glass Construction: Chemically resistant to acids, bases, solvents, and biological buffers; autoclavable; transparent for observation.
- Autoclavable at 121°C: Sterilizable at 121°C (250°F) for 20 minutes without filter membrane.
- SIBATA Precision Manufacturing: Manufactured by SIBATA Scientific Technology Ltd. to Japanese precision standards.
- 1-Year Warranty: Backed by VEE GEE Scientific's standard accessory warranty.
Specifications
| Property | Value |
|---|---|
| SKU | 6168-4722 |
| Description | Fritted Glass Support Base |
| Filter Diameter | 47 mm (6168 series) |
| Filter Support | Fused coarse-frit glass disk (no screen needed) |
| Material | Borosilicate Glass |
| Autoclavable | Yes — 121°C (250°F), 20 min |
| Used In Kits | 6168-0001 (300 mL), 6168-0003 (100 mL) |
| Compatible Funnels | 6168-4711 (300 mL), 6168-47100 (100 mL) |
| Dimensions (L × W × H) | 6.0" × 2.25" × 2.25" (15.2 × 5.7 × 5.7 cm) |
| Quantity | 1 Each |
| Country of Origin | Taiwan |
| Manufacturer | SIBATA Scientific Technology Ltd. |
| Brand | VEE GEE Scientific |
| Warranty | 1 Year |
6168 Series Support Base Types: Which Do I Need?
| SKU | Type | Filter Support | Best For | Used In |
|---|---|---|---|---|
| 6168-4722 (this item) | Fritted Glass Base | Fused coarse-frit disk | General & biological filtration | 6168-0001, 6168-0003 |
| 6168-4721 | Glass body for SS screen | Removable SS screen + PTFE gasket | Protein & ultraclean filtration | 6168-0002, 6168-0004 |
6168 Series Complete Component Reference
| SKU | Description | Type |
|---|---|---|
| 6168-0001 | Fritted Glass Filter System, 300 mL — Complete Kit | Complete kit |
| 6168-0002 | SS Screen Filter System, 300 mL — Complete Kit | Complete kit |
| 6168-0003 | Fritted Glass Filter System, 100 mL — Complete Kit | Complete kit |
| 6168-0004 | SS Screen Filter System, 100 mL — Complete Kit | Complete kit |
| 6168-47100 | Replacement 100 mL Funnel | Replacement part |
| 6168-4711 | Replacement 300 mL Funnel | Replacement part |
| 6168-4721 | Glass Support Base, for SS Screen | Replacement part |
| 6168-4722 (this item) | Fritted Glass Support Base | Replacement part |
| 6168-4731 | Stainless Steel Screen | Replacement part |
| 6168-4741 | PTFE Gasket | Replacement part |
| 6168-4751 | No. 8 Silicone Stopper | Replacement part |
| 6168-4762 | Anodized Aluminum Clamp, 47 mm I.D. | Replacement part |
Frequently Asked Questions
What is the difference between 6168-4722 and 6168-4721?
The 6168-4722 is the fritted glass support base — it has a coarse-frit glass disk permanently fused into the base body, which directly supports the filter membrane with no additional components. The 6168-4721 is a plain glass body designed to receive the removable stainless steel screen (6168-4731) and PTFE gasket (6168-4741). If your current kit is a fritted glass configuration (6168-0001 or 6168-0003), order 6168-4722. If it is a stainless steel screen configuration (6168-0002 or 6168-0004), order 6168-4721.
Does this fritted glass base fit both the 100 mL and 300 mL funnels?
Yes. The 6168-4722 fritted glass base is used in both the 100 mL kit (6168-0003) and the 300 mL kit (6168-0001). It mates with the ground-glass surfaces of both the 100 mL funnel (6168-47100) and the 300 mL funnel (6168-4711), locked by the aluminum clamp (6168-4762).
Can the fritted glass disk be cleaned if it becomes clogged?
Yes. Clogged frits can often be cleared by soaking in chromic acid cleaning solution, hot nitric acid, or enzyme-based lab detergents, followed by thorough rinsing. However, if the frit is cracked or if the vacuum seal surface is damaged, replacement with a new 6168-4722 base is recommended rather than continued use with a compromised frit.
Ordering
Authorized dealer, ships from USA inventory. Serving academic, government, and research laboratories nationwide.