Specifications Table

Product Name – Whatman ROBY Syringe Filter
Quantity/Pack Size – Pack of 1000
Form – Syringe Filter
Grade – 0.45?m RC+GF (Regenerated Cellulose + Glass Fiber)
Application – Clarification of viscous/particle-rich samples, environmental testing

Product Overview

The Whatman ROBY syringe filter with a 0.45?m RC+GF (regenerated cellulose + glass fiber) membrane in a bulk pack of 1000 is engineered for laboratories tackling challenging samples with high particulate loads or viscosity. The dual-layer design combines the fine retention of regenerated cellulose with the high dirt-holding capacity of glass fiber, delivering exceptional clarity without premature clogging. This makes it ideal for environmental samples, industrial suspensions, or biological fluids where traditional filters fail. The RC layer ensures low protein binding and broad chemical compatibility, while the GF layer traps larger debris, extending filter lifespan and reducing maintenance. The 0.45?m pore size effectively removes bacteria and fine particles, making it suitable for pre-filtration before sterile steps or analytical instruments. The bulk packaging offers cost efficiency for high-throughput labs, with each filter manufactured to Whatman?s exacting standards for consistent performance. The 25mm diameter and luer-lock connection ensure easy integration into existing workflows, and the robust construction minimizes extractables, safeguarding sample integrity. Whether used for water testing, food/beverage analysis, or research applications, the RC+GF filter provides reliable clarification, improving data quality and instrument longevity.

FAQs

1. What types of samples clog standard 0.45?m filters but work with RC+GF?

Samples like soil extracts, wastewater, cell lysates, or viscous biological fluids often clog single-layer filters but flow smoothly through RC+GF due to its dual-layer design.

2. Can RC+GF filters be used for filtering oils or hydrocarbons?

No, glass fiber is not compatible with non-polar solvents. For oils, use PTFE or nylon membranes instead.

3. How does the flow rate compare to a standalone GF filter?

The RC+GF combination offers slower flow than GF alone but significantly better clarity and finer retention, balancing speed and performance.

4. Are these filters suitable for filtering blood or serum?

While RC+GF can clarify blood/serum, the glass fiber may bind proteins. For clinical samples, use a low-bind membrane like PES or cellulose acetate.

5. What is the recommended pre-filtration step before using RC+GF?

For extremely turbid samples, pre-filter with a 1.2?m or 5?m depth filter to extend the RC+GF filter?s lifespan and improve flow rates.