材质：聚碳酸酯。尺寸：长约13cm。内含三种色彩观察管。黄色加上蓝色会变成什么颜色呢？只要摇一摇观察管，两个颜色就会混合成另一色。不同密度颜色，能重复混合及分离，安全防漏让幼儿能随心观察色彩变化，认识不同颜色。
Watch as colors combine…right before your eyes! Children shake our tubes to observe how primary colors combine to make secondary colors. And, the colored liquids have different densities, so they’ll separate automatically…to use again! You get three plastic, leakproof tubes; each measures 5".
