As we are in bottling season, free sulfite deserves extra attention.  Free SO₂ is your last line of defense against oxidation and microbial spoilage. Levels can shift more than expected after racking, blending, or filtration.  Before bottling, make sure to:  • Measure and confirm free SO₂  • Adjust based on pH and desired molecular SO₂  • Recheck after final additions and just prior to filling  A few ppm can make the difference between a wine that evolves beautifully and one that fades prematurely.   Please reach out if you’d like to chat about automated solutions for checking free sulfite. 

If you’ve ever rerun a sample because your free SO₂ result didn't seem right, this post is for you. Managing free and total sulfites is one of the most critical controls in wine stability and shelf life. Our free sulfite reagent kit is for producers who want to evaluate chemistry in their lab.  What you’ll be able to test:  • consistency across replicates  • compatibility with your analyzer and protocols  • real-world performance We would love to help make your lab's QC easier. Please reach out today for more details!

With BioSystems' Free Sulfite Analysis Kit, you can measure FSOâ‚‚ alongside other key parameters like total SOâ‚‚, acetic acid, glucose/fructose, organic acids, and polyphenols—all at once, all automated, and from less than 2 mL of sample. Just load the sample, choose your analytes, press “Run,” and walk away. The analyzer handles the rest—freeing you up to work on other tasks.  What could you do if you didn't have to manually run free sulfite tests?

The Astoria2 for Free and Total Sulfite analysis is a workhorse for laboratories with high sample loads. Unlike other instruments, the Astoria2 does not use carcinogenetic reagents for the sulfite methods. It uses easy-to-use software on WIN10 or WIN11 and runs at up to 120 tests per hour. Please note that the Astoria2 is designed for labs with lots of samples, so make sure to do appropriate cost analysis prior to purchase. We are happy to assist you with this endeavor. 

Come by Astoria-Pacific's Booth # 623 at the WIN EXPO DEC 5, 2024.  We want to discuss the idea of bringing real science back to Free Sulfite analysis in wine. Oh, yes, we also offer systems for other crucial tests.

Instead of tracking multiple barrels and tanks individually for free sulfite, total sulfite, acetic acid, and other compounds, the BioSystems free sulfite analysis kit offers a quick, reliable solution.  With this AOAC and OIV automated validated system, you can perform simultaneous analyses on multiple parameters—all from a single 3 mL sample. Just load the sample, select your desired tests, and press run. The system handles the rest, letting you focus on other tasks. 

Is your lab ready for the coming year? Are you using the best instrumentation for your wine analyses? To learn more, visit Astoria-Pacific, booth number 623, at the WIN Expo on Dec 5, 2024!

Will you be attending the ASEV Symposium in Portland this year? If so, please pop by our display. If not but know someone who is, have them stop by. Astoria-Pacific offers the rAPID-T for your common tests like Acetic Acid, Malic, Glucose+Fructose, etc. We also have a new system for Free Sulfite that will be introduced later this year.

Please visit our booth 253 at the Oregon Wine Symposium, Feb 13 - 15, this month. We can discuss various wine analyses, including our new Free Sulfite analyzer, which will be available later this year. We look forward to talking with you.

Free Sulfite Analysis Got You Down?  No worries! Swing by Unified booth #101 for a preview of our new module for Free Sulfite Analysis. Big winery? Small winery? Something in between?  Astoria-Pacific will have you covered. It's time to think about the future...