ขวด, เครื่องแก้ว, เคมี, ถ้วยแก้ว, ห้องปฏิบัติการ, อุปกรณ์, ของเหลว, สารเคมี, การทดลอง, วิจัย, ภาชนะ
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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