Bucking the trend of everything going up, up, up in price, Graver's ZTEC WB prices have dropped about 20% thanks to manufacturing efficiencies, and we're passing along the savings.

They're still made in Delaware, USA in an ISO Class 7 Cleanroom, and lab-tested for integrity. You can clean them, re-use them, bubble point test them, etc. The one and only difference is that they're less expensive now.

Graver's ZTEC WB filters are specially designed for sterile filtration in wineries & breweries (hence the "WB" in their name). 

0.45 µm filters are specifically designed for sterile filtration of white wines, while the 0.65 µm filters are typically used for sterile filtration of red wines.

Graver ZTEC WB Pricing

• 10": $106.42
• 20": $207.63
• 30": $314.10