This Filter Paper Qualitative No. 1 is perfect for general laboratory filtration needs, such as separating solids from liquids during chemical analysis, teaching labs, and routine testing.

Key Features:

• Retains large crystalline particles and gelatinous precipitates
• Fast flow rate, smooth surface, normal hardness
• Nominal Rate: 6um (Coarse)
• 100% Cotton Linter Cellulose
• Clarify and remove precipitates
• Preparation for qualitative analysis 

• Type	Pore Size Range	Typical Use	Effect on Liquid Clarity	Flow Speed
  Qualitative (e.g., Grade 1)	8–11 μm	Routine lab filtration, removing larger sediments	Good for basic clarity (traps visible particles like sand or grounds)	Fast
  Quantitative (e.g., Grade 5 or finer ash-free)	2.5–3.5 μm	Analytical work, gravimetric analysis	Best for high clarity (traps very fine particles, ideal for purifying solutions or beverages like wine)	Medium to slow
  Glass Microfiber	0.7–2.7 μm	High-temperature or chemical-resistant filtration	Excellent for ultra-clear results in specialised cases (e.g., air pollution analysis), but less common for liquids	Fast (but requires flat use, not folding)
  Specialty (e.g., Wine Filtration)	7–10 μm	Food/beverage clarification	High clarity for consumables, retaining fine sediments while preserving taste	Medium