• Mask and Protective Testing Equipment
• Toy Testing Equipment
• Toy Safety Testing Machine (EN 71 ISO 8124 ASTM F963 16 CFR 1500 Standards)
• Flammability Testing Machine (EN 71-2 ASTM F963 Standards)
• Swing Testing Equipment (EN 71-8 ISO 8124-4 Standards)
• Textile Testing Equipment
• Footwear Testing Equipment
• Furniture Testing Machine
• Battery Testing Machine

YO-YO Ball Tester

The GT-MB19 yo-yo ball tester is utilized for the measurement of initial length l0 and elastic constant k of yo-yo balls, and the toy safety testing equipment is compliant with EN-71-1 8.37.

Yo-Yo Ball Initial Length Measurement
Apply a mass of 0.05±0.001kg to the ring at the end of the tether made of elastic material, and then measure the initial length l0 in millimeters to an accuracy of ±1mm.

Yo-Yo Ball Elastic Constant Measurement
1. Attach a fixed clamping device to the yo-yo ball tether 15±5mm from the ball. Then, position the tether vertically and attach a free clamping device to the tether at a distance of 15±5mm from the ring at the end of tether.

2. Apply a mass (including the mass of the free clamping device) of 0.1±0.005kg to the free clamping device parallel to the axis of the tether and measure the distance L₁ between the two clamps in millimeters to an accuracy of ±1mm.

3. Remove the force and allow the tether to relax to its approximately original length.

4. Apply a mass (including the mass of the free clamping device) of 0.2±0.005kg to the free clamping device parallel to the axis of the tether and measure the distance L₂ between the two clamps in millimeters to an accuracy of ±1mm.

5. Calculate the elastic constant k as the following equation: k=1000/(L₂-L₁)

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  2. Impact Tester (Spring Operated Impact Test Apparatus)
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  2. Vibration Testing Machine
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  2. Formaldehyde Test Kit
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  2. Compression Testing Machine (Cardboard Box Compression Tester )