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QLA Capsule Sinkers

Capsule Sinkers from QLA

QLA offers the most extensive selection of tablet and capsule sinkers available from a single source. Our family of sinkers includes most configurations currently in use worldwide, including helical style, basket style, three-prong style and others.

Part Number Short Description Price Qty
CAPWHT-SV 3 Prong Capsule Sinker 316 SS
£23.15
CAPWHT-VK 3 Prong Capsule Sinker, Plastic
£21.28
BSK008-JP 8 Mesh Basket Sinker 316 SS .90 (22.9mm) L x .51 (12.9mm) W
£87.37
BSK008-01 8 Mesh Basket Sinker 316 SS 1.06 (26.9mm) L x .62 (15.7mm) W
£87.37
CUSBSK-ALF Alfuzosin Hydrochloride Cylinder Sinker 316 SS
£146.46
CAPWHT-PC Breath Film Sinker 316 SS
£53.44
CUSBSK-JP Japanese Pharmacopeia Basket Sinker 316 SS
£123.65
CUSBSK-JPMAG Magnetic Japanese Basket Sinker 316 SS
£233.52
CAPWHT-S99 O-Ring Sinker 316 SS
£20.62
CUSBSK-ROP Ropinirole Cylinder Sinker 37mm L x 19mm D 316 SS
£146.46
CAPWHT-2S Spiral Capsule Sinker 316 SS .84 (21.3mm) L x .37 (9.4mm) W
£21.65
CAPWHT-4S Spiral Capsule Sinker 316 SS .84 (21.3mm) L x .385 (9.8mm) W
£21.65
CAPWHT-XLSS Spiral Capsule Sinker 316 SS .885 (22.5mm) L x .465 (11.8mm) W
£32.25
CAPWHT-XS Spiral Capsule Sinker 316 SS .885 (22.5mm) L x .575 (14.6mm) W
£39.18
CAPWHT-XLS Spiral Capsule Sinker 316 SS 1.15 (29.2mm) L x .465 (11.8mm) W
£32.72
CAPWHT-LGMT Spiral Capsule Sinker Orange PTFE Coated Music Wire
£50.80
CAPWHT-XSTEF Spiral Capsule Sinker PTFE coated 316 SS .885 (22.5mm) L
£44.85
CAPWHT-02 Spiral Capsule Sinker PTFE Coated Music Wire .84 (21.3mm) L
£36.37
CAPWHT-04 Spiral Capsule Sinker PTFE Coated Music Wire .84 (21.3mm) L
£36.37
CAPWHT-LG Spiral Capsule Sinker PTFE Coated Music Wire 1.10 (27.9mm) L
£39.37
CAPWHT-XL Spiral Capsule Sinker PTFE Coated Music Wire 1.15 (29.2mm) L
£39.37
CAPWSC-01S Spiral Capsule Sinker with Screw on Cap 316 SS .9 (22.9mm) L
£72.32
CAPWST-15 Spring Style Capsule Sinker 316 SS .61 (15.5mm) L
£33.28
CAPWST-18 Spring Style Capsule Sinker 316 SS .71 (18mm) L
£34.22
CAPWST-19 Spring Style Capsule Sinker 316 SS .76 (19.3mm) L
£35.25
CAPWST-23 Spring Style Capsule Sinker 316 SS .91 (23mm) L
£36.19
CAPWST-31 Spring Style Capsule Sinker 316 SS 1.22 (31mm) L
£37.31
CAPWHT-TR Time Release Capsule Sinker 316 SS
£24.94
CAPWHT-U01 U Shaped Sinker 1.024 (26mm) length (fits Capsule Sizes 0 and 1), 316 SS
£68.65

Inevitably, home-made sinkers tend not to be reproducible and so commercially available sinkers are quite popular. The choice of sinker will depend on the tablet or capsule.

Sinker Size - The sinker should have minimal surface contact with the tablet as this can affect the dissolution rate. Sinkers are available in different sizes to accommodate most capsule/tablet dimensions.

Sinker Weight - Should be heavy enough to ensure that the tablet sinks to the bottom of the vessel and doesn’t move for the duration of the test.

PTFE Coated Sinkers - Can be used where there may be a reaction between steel and the tablet. They also work well with magnetic retrievers.

Uncoated - 316 stainless steel sinkers are more durable than coated sinkers.

Basket Sinkers - Ideal for coin shaped tablets but care should be taken that the outer coating of the tablet does not clog the mesh.

Wire Spirals - Should be as wide as practically possible to avoid clogging which would affect the dissolution rate.

Basket Sinker Specifications

Part Number Style Material Inside Diameter Inside Length Wire Diameter Max Capsule Size
CUSBSK-JP Basket, JP 316 SS 11.9 mm 25.4 mm 1.00 mm 00
BSK008-01 Basket, 8 Mesh 316 SS 15.7 mm 26.9 mm 0.71 mm 000
BSK008-JP Basket, 8 Mesh 316 SS 12.9 mm 22.9 mm 0.71 mm 1
SNK008-VK Basket, 8 Mesh 316 SS 20.2 mm 12.7 mm 0.71 mm 00
SNK010-VK Basket, 10 Mesh 316 SS 20.2 mm 12.7 mm 0.64 mm 00
SNK020-VK Basket, 20 Mesh 316 SS 20.2 mm 12.7 mm 0.41 mm 00
SNK040-VK Basket, 40 Mesh 316 SS 20.2 mm 12.7 mm 0.25 mm 00
SNK080-VK Basket, 80 Mesh 316 SS 20.2 mm 12.7 mm 0.18 mm 00

 

Pronged Sinker Specifications

Part Number Style Material Inside Diameter Inside Length Max Capsule Size
CAPWHT-VK 3 Prong Nylon / PP 9.5 mm 25.4 mm 1 (min = 3)
MAGWHT-VK 3 Prong Nylon / PP 9.5 mm 25.4 mm 1 (min = 3)
PartCAPWHT-SV 3 Prong 316 SS 7.0 mm 25.4 mm 1 (min = 3)

 

O-Ring Sinker Specifications

Part Number Style Material Inside Diameter Inside Length Max Capsule Size
CAPWHT-S99 O-Ring 316 SS 5.8 mm 22.9 mm 0

 

Spiral Sinker Specifications

Part Number Style Material Coating Inside Diameter Inside Length Wire Diameter Max Capsule Size Number of Coils
CAPWHT-TR Butterfly 316 SS - 5.4 mm 9.5 mm 0.76 mm - -
CAPWHT-PC Strip Film 316 SS - 10.8 mm 10.8 mm 0.94 mm - -
CAPWST-15 Helix 316 SS - 5.0 mm 15.5 mm 0.41 mm 5 6
CAPWHT-04 Helix Music Wire PTFE 9.8 mm 21.3 mm 1.09 mm 0 5
CAPWHT-4S Helix 316 SS - 9.8 mm 21.3 mm 1.19 mm 0 5
CAPWHT-LG Helix Music Wire PTFE 10.4 mm 27.9 mm 1.09 mm 000 6.5
CAPWHT-XL Helix Music Wire PTFE 11.8 mm 29.2 mm 1.09 mm 000 5.5
CAPWHT-XLS Helix 316 SS - 11.8 mm 29.2 mm 1.09 mm 000 5.5
CAPWHT-XLSS Helix 316 SS - 11.8 mm 22.5 mm 1.09 mm Special 3
CAPWST-18 Helix 316 SS - 6.0 mm 18 mm 0.41 mm 3 8
CAPWST-19 Helix 316 SS - 7.0 mm 19.3 mm 0.41 mm 2 8
CAPWHT-2S Helix 316 SS - 9.4 mm 21.3 mm 1.09 mm 0 8.5
CAPWHT-02 Helix Music Wire PTFE 9.4 mm 9.4 mm 1.19 mm 0 8.5
CAPWHT-XS Helix 316 SS - 14.6 mm 22.5 mm 1.19 mm Special 8.5
CAPWST-23 Helix 316 SS - 8.0 mm 23 mm 0.41 mm 0 9
CAPWST-31 Helix 316 SS - 11.0 mm 31 mm 0.78 mm 000 11

 

Wire Specifications

Part Number Style Material Wire Diameter
WIRESK-VK Sinker Wire 50’ 316 SS 0.81 mm

 

Capsule Size Guide

Capsule Size Length Diameter
000 26.1 mm 9.91 mm
00E 25.7 mm 8.53 mm
00 23.3 mm 8.53 mm
0E 23.1 mm 7.65 mm
0 21.7 mm 7.65 mm
1 19.4 mm 6.91 mm
2 18.0 mm 6.35 mm
3 15.9 mm 5.83 mm
4 14.3 mm 5.32 mm
5 11.1 mm 4.91 mm
QLA Catalogue (8.70 MB)
Brochure with full range of QLA dissolution parts
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