Plastic Coupons (25mm diameter) – Experimental coatings

AR1697 (no reset) Coupon 11 PMMA clean		ASW Gap 10mm	Higher than uncoated

AR1698 Coupon 8 PMMA clean			ASW Gap 10 mm	Higher than uncoated

AR1698/2 Repeat

AR1699/1 Coupon 14 PMMA+FA Clean		ASW Gap 10 mm	Similar to non-coated

AR1699/2 (replicate not finished)

AR1700 Coupon 16 PMMA+FA Clean			ASW Gap 10 mm	Similar to non-coated

AR1701 Coupon 4 PMMA+Br Clean			ASW Gap 10 mm	Same as coated

AR1702 Coupon 1 PMMA+Br Clean			ASW Gap 10 mm	22.2°C

AR1703 Coupon 17 PMMA+FA Fouled		ASW Gap 10 mm	Slightly elevated

AR1704 Coupon 17 PMMA+FA Fouled Cleaned	ASW Gap 10 mm
Reduced

AR1705 Coupon 18 PMMA+FA Fouled		ASW Gap 10 mm	22.3°C

AR1706 Coupon 18 PMMA+FA Fouled Cleaned	ASW Gap 10 mm	22.3°C
Slightly lower

AR1707 Coupon 7 PMMA Fouled			ASW Gap 10 mm	22.3°C

AR1708 Coupon 7 PMMA Fouled Cleaned		ASW Gap 10 mm	22.3°C

AR1709 Coupon 7 PMMA Fouled Cleaned Twice	ASW Gap 10 mm	22.3°C
Same as after first clean – extra cleaning makes no difference

AR1710 Coupon 9 PMMA Fouled			ASW Gap 10 mm	22.3°C
visibly fouled on edge particularly

AR1711 Coupon 9 PMMA Fouled Cleaned		ASW Gap 10 mm	22.3°C
Reduced

AR1712 Coupon 2 PMMA+Br Fouled			ASW Gap 10 mm	22.3°C

AR1713 Coupon 2 PMMA+Br Fouled Cleaned	ASW Gap 10 mm	22.3°C

AR1714 Coupon 3 PMMA+Br Fouled			ASW Gap 10 mm	22.3°C

AR1715 Coupon 3 PMMA+Br Fouled Cleaned	ASW Gap 10 mm	22.3°C
Large decrease

Plastic Coupons (25mm diameter) - SANDPAPERS

AR1741 (SI1)	Sandpaper roughness (blank vs blank)
AR1742 (SI2)	Sandpaper roughness (blank vs blank)
AR1743 (SI3)	Sandpaper roughness (blank vs P240)
AR1744 (SI4)	Sandpaper roughness (blank vs P120)
AR1745 (SI5)	Sandpaper roughness (blank vs P100)
AR1746 (SI6)	Sandpaper roughness (blank vs P80)
AR1747 (SI7)	Sandpaper roughness (blank vs P60)
AR1748 (SI8)	Sandpaper roughness (blank vs blank)
AR1749 (SI9)	Sandpaper roughness (blank vs P240)
AR1750 (SI10)	Sandpaper roughness (blank vs P120)
AR1751 (SI11)	Sandpaper roughness (blank vs P100)
AR1752 (SI12)	Sandpaper roughness (blank vs P80)
AR1753 (SI13)	Sandpaper roughness (blank vs P60)
AR1754 (SI14)	Sandpaper roughness (blank vs P120)

Roughness values measured by Alicona Infinite Focus microscope profiling

Test	Coupon No.	NPL No.	Test Liquid	Coupon Gap	Coupon Diameter	Surface	PE Beads	Repeat No.	Notes	
T1	C23	AR1741	ASW	10mm	25mm	Blank	No	0001f-0005f	Low Turbulence	
T2	C23	AR1742	ASW	10mm	25mm	Blank	Yes	0001f	Low Turbulence	
T3	C20	AR1743	ASW	10mm	25mm	P240	Yes	0001f	Much greater turbulence observed after addition of sandpaper	
T4	C23	AR1744	ASW	10mm	25mm	P120	Yes	0001f	-	
T5	C20	AR1745	ASW	10mm	25mm	P100	Yes	0001f	-	
T6	C23	AR1746	ASW	10mm	25mm	P80	Yes	0001f	275 rad/s - turned even more turbulent than in AR1745	
T7	C20	AR1747	ASW	10mm	25mm	P60	Yes	0001f-0003f	Repeats taken to improve accuracy, repositioning; 0002f ~260 rad/s	
T8	C24	AR1748	ASW	10mm	25mm	Blank	Yes	0001f	-	
T9	C23	AR1749	ASW	10mm	25mm	P240	Yes	0001f	-	
T10	C24	AR1750	ASW	10mm	25mm	P120	Yes	0001f	Possible skewed results - triplicate as AR1754	
T11	C23	AR1751	ASW	10mm	25mm	P100	Yes	0001f	-	
T12	C20	AR1752	ASW	10mm	25mm	P80	Yes	0001f	-	
T13	C23	AR1753	ASW	10mm	25mm	P60	Yes	0001f	-	
T14	C24	AR1754	ASW	10mm	25mm	P120	Yes	0001f-0003f	Triplicated repeats of AR1750; 0002f & 0003f undertaken at peak volocity for camera/video	
T15	C20	AR1755	DIW	10mm	25mm	Blank	Yes	0001f-0004f	Stopped to add teepol; 1 minute holding velocities to see flow patterns for camera - PIV	
T16	C20	AR1756	DIW (+teepol)	10mm	25mm	Blank	Yes	0001f-0015f	Added teepol;  1 minute holding velocities to see flow patterns for camera (PIV), change camera angles