filtration - 2025 ACF Fall

Tossup

In 2015, a Merck brand whose name references this process merged with Sigma–Aldrich. A “sterile” form of this process can be performed (10[1])using a PES membrane fitted to a syringe. A component (10[1])of BSCs performs a highly efficient form of this process (-5[1])through (10[1])diffusion, interception, (10[2])impaction, and electrostatic attraction. (10[1])Diatomaceous earth (-5[2])aids this process by forming (10[1])a “cake.” (10[1]-5[3])A Büchner (10[3]-5[1])funnel (10[3]-5[3])connected (10[2])to an (10[2]-5[1])aspirator (10[10])is used (10[1])for (10[1])the “vacuum” (10[4])form (10[5]-5[3])of (10[2])this (10[6])process. (10[19]-5[5])HEPA (10[2]-5[1])(“HEP-uh”) units (10[1])perform (-5[1])this process, (10[5]-5[2])which (10[1])can (10[1])also (10[1])be (10[1])performed (10[3])using specialized paper with uniform (10[4])pore sizes (10[1])to block (10[1])particulate matter. (10[5]-5[2])For 10 points, (10[1])name this process of separating solids (10[1])from (10[1])a fluid. (10[2])■END■ (10[18]0[4])

ANSWER: filtration [accept word forms like filtering; accept filter paper; accept HEPA filters; accept vacuum filtration; accept filter cakes; accept filter aids; accept membrane filters or membrane filtration; accept sterile filtration; prompt on air purification or word forms like purifying; prompt on separation or word forms like separating; prompt on HEPA or high efficiency particulate air or high efficiency particulate arresting until “HEPA” is read ] (The brand in the first line is Merck Millipore, which merged with Sigma–Aldrich to create MilliporeSigma.)

<JZ, Chemistry>

= Average correct buzz position

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Buzzes

Player	Team	Opponent	Position	Value
March Delfin	UCSD A	UCLA D	21	10
Susanna Liao	Waterloo A	McMaster A	31	10
Anthony Xu	Amherst A	Vermont B	41	-5
Will Marcotte	Toronto D	Toronto C	42	10
Rohan Soni	UCLA F	UCLA E	44	10
Xavier Bornhorst	Maryland A	Maryland C	44	10
Nishad Joshi	Kentucky	CWRU C	48	10
Jesse Mindel	NCSU A	Virginia Tech A	50	-5
Michael Shipman	Cambridge D	Imperial B	50	-5
Ishan Pachauri	UCLA C	Claremont B	55	10
Charlie Ruff	McGill A	Ottawa A	57	-5
Jennifer Zhu	McGill C	Ottawa B	57	-5
Thomas Brittain	McMaster C	Brock A	57	10
Liam Rojas	Virginia A	UNC A	57	-5
Winston Zuo	UC Santa Barbara	UCLA B	59	10
Sai Subramanian	CWRU A	Louisville A	59	10
Jason Lee	Rutgers A	George Mason A	59	10
Anne Fjeld	Alberta A	Washington Chum	59	-5
Matthew Stall	CWRU D	Louisville B	60	-5
Jason Thieu	Michigan State A	Michigan A	60	10
Cara Leonard	William & Mary C	Duke A	60	-5
Nathan Sprouse	Virginia Tech B	William & Mary A	60	10
Saswat Sasha Tripathi	Chicago A	WashU Grolars	60	-5
Drew Wetterlind	Iowa State	Wisconsin A	60	10
Jacob Goodson	Ohio State A	Ohio State B	61	10
Richard D’Angelo	Tennessee B	Clemson C	61	10
Pace Klein	CWRU B	Michigan B	63	10
Grace Early	Iowa A	Rose-Hulman A	63	10
Darren Kellis	Vanderbilt A	Clemson A	63	-5
Brendan Bridle	Queen's A	Toronto H	64	10
Pratham Bhanushali	WVU B	Louisville C	64	10
Alexandra Knight	Liberty B	Tusculum A	64	10
Fern Fang	VCU A	UNC C	64	10
Andrew Sklar	Vassar B	George Mason C	64	10
Brian Qian	Illinois Canada	Chicago B	64	10
William Henley	Illinois Champaign	Illinois Orange	64	10
Jeremy Scurlock	Chipola College	Georgia Tech A	64	10
Niyanthi Yamunan	Georgia Tech E	Auburn B	64	10
Laura Bullock	Sheffield A	Edinburgh C	64	10
Advai Srinivasan	UC Irvine	USC B	66	10
Ethan Ririe	UCSD B	Claremont A	67	10
Aaryan Sumesh	Berkeley Archer Queen	Stanford B	69	10
Jackson Price	Dartmouth B	Brandeis Mozart	69	10
Alex Hestermann	Washington Sockeye	British Columbia B	69	10
Atom Lucenet	Imperial D	Bristol	69	10
Yun Loh	Penn	George Mason B	70	10
Andrew Wu	Columbia A	NYU B	70	-5
Matthew Westley	Purdue A	Illinois Blue	70	10
Sophia Madrazo	Purdue B	WashU Grizzlers	70	10
Eames Weeks	Brown A	Tufts A	70	-5
Martin Brandenburg	Georgia A	Georgia Tech F	70	10
Caleb Slusher	South Carolina A	Georgia Tech C	70	-5
Aiden Shields	Clemson A	Vanderbilt A	70	10
Nick Machin	UCLA A	Claremont C	71	10
Owen Gibbs	Boston College B	Amherst B	71	10
Lucas Hall	Waterloo C	Guelph A	72	10
Rohit Chintala	Maryland B	NYU A	72	10
Alex Wong	Rutgers D	Vassar A	72	10
Olivia Ding	Texas	Washington Pink	72	10
Andreas Ktori	Durham A	Sheffield B	72	10
Yasmin Campbell	Cambridge B	Southampton	72	10
Galen Mueller	McGill B	Ottawa D	73	-5
Stephen Ottewell	Toronto B	Toronto A	73	10
Jeremy Kim	Toronto F	Toronto I	73	10
Bonham Buchannon	Louisville D	Pittsburgh	73	10
Noah Fine	UNC D	UNC B	73	-5
Elizabeth Ziberman	Stony Brook	Johns Hopkins	73	10
Nathan Phan	Princeton	Rutgers B	73	10
John Shelly	Rowan	NYU C	73	-5
Arthur Zhang	Purdue C	Indiana A	73	10
Ethan Enochian	Purdue D	Indiana B	73	10
Matthew Kohn	Williams A	Dartmouth A	73	10
Jack Yesner	Brandeis Beethoven	Dartmouth C	73	10
Kyle Hart	MIT B	Harvard	73	10
Duncan Occhiogrosso	UConn A	Brandeis Bach	73	10
Ben Mowery	Vermont A	Boston University A	73	10
Mohamed Algraiw	MIT A	Williams B	73	-5
Yoyo Liu	British Columbia C	British Columbia A	73	10
Nathan Whittington	Tennessee A	Alabama A	73	10
Abby Tipton	Auburn C	Vanderbilt B	73	10
Gabrielle Smith	Auburn A	Emory A	73	10
John Shelley	Clemson B	Georgia Tech D	73	10
Kamil Boehm	Cambridge A	Cardiff	73	-5
Megan Englehart	ESF	Binghamton B	73	10
Eli O'Sick Johnson	Binghamton C	Cornell C	73	10
Alden Thompson	Carleton A	Ottawa C	74	10
Andrew Lin	Toronto G	Toronto E	74	10
Nikhil Nair	Boston University B	Tufts C	74	-5
Ben Gardberg	Cornell B	Rochester	75	10
June Miller	Florida A	UCF A	76	-5
Liam Henderson	McMaster B	Waterloo B	78	-5
Reed Sexton	Michigan C	Michigan State B	78	10
Nicholas Ryan	Lehigh B	Lehigh A	78	10
Isabel Dent	Sewanne	Montevallo	78	10
Naayaz Hashim	Oxford	Imperial C	78	10
Ahmed Azhari	Cambridge E	Warwick	78	-5
Derek Li	Cornell A	Binghamton A	78	10
Alex Dzurick	William Woods University A	Illinois Urbana	79	10
Cooper Morris	Columbia B	Rutgers C	80	10
Irene Wu	Cornell D	RIT A	81	10
Anirudh Terdal	LSE	Cambridge C	82	10
Josue Lopez	WVU A	Ohio State D	83	10
Luke Houtz	Arizona State B	Washington State	83	10
Kylie Tokeshi	Arizona State A	Washington Steelhead	83	10
Simon Ronis Tobin	Ohio State C	Michigan D	88	10
Evan Roberts	Vanderbilt C	Mississippi State A	88	10
Alex Miller	Edinburgh B	Edinburgh A	88	10
Tom Morris-Jones	Birmingham	Imperial A	88	10
Lucy Izabella	Edinburgh D	Durham B	90	10
Sia Kalia	Warwick	Cambridge E	92	10
Gus Morin-Strom	Carleton B	McGill E	94	10
Jack Meyers	Brown B	Boston College A	94	-5
Logan Van Pelt	Washington Coho	Alberta B	94	10
Joanna Xiao	Georgia Tech B	Tennessee Tech	94	10
Jack Disbury	Durham D	York	94	-5
Benjamin Turner	York	Durham D	94	10
Harri Slaughter	Cardiff	Cambridge A	94	10
Annabelle Koopmans	Washington Atlantic	Boise State	97	10
Ilyas Choukri	Virginia Tech A	NCSU A	103	10
Levan Tsiskarisvili	JMU B	NCSU B	104	10
Chen Nagahawatte	Ottawa B	McGill C	106	10
Zack Wiffen	Waterloo B	McMaster B	106	10
Rebecca Li	Ottawa A	McGill A	107	10
John Rootham	Ottawa D	McGill B	107	10
Peyton Legg	UCF A	Florida A	107	10
Joseph Strom	Louisville B	CWRU D	107	10
Will Jones	Michigan State D	Michigan State C	107	0
Eric Cameron	Michigan State C	Michigan State D	107	10
Andrea Owusu	Duke A	William & Mary C	107	10
Mason Lambert	JMU A	Liberty A	107	10
Joseph Cole	UNC A	Virginia A	107	10
Ezra Zareba	UNC B	UNC D	107	10
Gabe Rosen-Turits	NYU B	Columbia A	107	0
Renita Tang	NYU C	Rowan	107	0
Ethan Skolnick	WashU Grolars	Chicago A	107	10
Indigo Khanna	Vermont B	Amherst A	107	10
Beverly Eborn	Boston College A	Brown B	107	10
Thomas Newill	Tufts C	Boston University B	107	0
Madeline Strauss	Tufts A	Brown A	107	10
Salil Jain	Williams B	MIT A	107	10
George Matsumura	Washington Chum	Alberta A	107	10
Stella Brown	Washington Masu	Washington Chinook	107	10
David Xilbille	Georgia Tech C	South Carolina A	107	10
Vishrut Pisupati	Imperial B	Cambridge D	107	10

Summary

Tournament	Edition	TUH	Conv. %	Neg %	Average Buzz
UK (North)	UK	5	100%	20%	81.60
UK (South)	UK	8	100%	38%	85.25
Northern California	US	1	100%	0%	69.00
Southern California	US	7	100%	0%	54.71
Eastern Canada (1)	US	5	100%	60%	97.60
Eastern Canada (2)	US	9	100%	11%	65.78
Florida	US	1	100%	100%	107.00
Great Lakes	US	12	100%	8%	74.25
Lower Mid-Atlantic	US	9	100%	44%	91.44
Upper Mid-Atlantic	US	12	83%	17%	68.50
Midwest	US	9	100%	11%	73.67
North	US	1	100%	0%	60.00
Northeast	US	12	92%	42%	84.82
Pacific	US	9	100%	11%	87.22
Southeast	US	13	100%	15%	76.00
Upstate NY	US	5	100%	0%	76.00