Comparison : Item # QF-6A-1, Pyrex Brand, Erlenmeyer, Narrow Mouth, Heavy Duty Rim, Graduated
Item # QF-6A-2, Pyrex Brand, Erlenmeyer, Narrow Mouth, Heavy Duty Rim, Graduated
Item # QF-6A-3, Pyrex Brand, Erlenmeyer, Narrow Mouth, Heavy Duty Rim, Graduated
Item # QF-6A-4, Pyrex Brand, Erlenmeyer, Narrow Mouth, Heavy Duty Rim, Graduated
Item # QF-6A-5, Pyrex Brand, Erlenmeyer, Narrow Mouth, Heavy Duty Rim, Graduated