CHEMGLASS 3000ML SINGLE NECK BOILING FLASK $35/20 LAB GLASS(J4)

　　CHEMGLASS 12000ML 3 NECK BOILING FLASK $45/50 LAB GLASS (Z3)

　　CHEMGLASS 3000ML SINGLE NECK BOILING FLASK $29/42 LAB GLASS(J4)

　　CHEMGLASS 250mL Pressure-Equali?zing GraduatedAdditi?onFunnel29/26 LAB GLASS (II2)

　　KIMAX KIMBLE 4000ML FILTER FLASK NO. 227060 LAB GLASS (Q5)

　　CHEMGLASS GAS SCRUBBER LAB GLASS (Q5)

　　KIMAX KIMBLE 4000ML FLASK NO. 26500 LAB GLASS (Q5)

　　PLC采用循环扫描的工作方式，在PLC中用户程序按先后顺序存放，CPU从第一条指令开始执行程序，直到遇到结束符后又返回第一条，如此周而复始不断循环。PLC的扫描过程分为内部处理、通信操作、程序输入处理、程序执行、程序输出几个阶段。全过程扫描一次所需的时间称为扫描周期。当PLC处于停状态时，只进行内部处理和通信操作服务等内容。在PLC处于运行状态时，从内部处理、通信操作、程序输入、程序执行、程序输出，一直循环扫描工作。

　　CHEMGLASS 1000ML BOILING FLASK $29/42 LAB GLASS (Q5)

　　CHEMGLASS 2000ML SINGLE NECK BOILING FLASK $29/42 LAB GLASS(J4)

　　KONTES 1000ML $29/42 HEAVY WALLED BOILING FLASK ROUNDED BOTTOM LAB GLASS (II2)

　　CHEMGLASS DOUBLE JACKETED CONDENSER COIL LAB GLASS (Q5)

　　CHEMGLASS 2000mL Pressure-Equali?zing Grad. Addition Funnel 29/42 lab glass (II2)

　　CHEMGLASS 5000ML SINGLE NECK BOILING FLASK $45/50 LAB GLASS(J4)

　　KNOTES 5000ML 3 NECK BOILING FLASK $45/50& 29/42 LAB GLASS W/ INDENTATIONS (Z3)

　　PYREX 1000ML NO.4980 FLASK LAB GLASS (Q5)

　　CHEMGLASS 1000mL 29/42 Pressure-Equali?zing Graduated Addition Funnel (II2)

　　SET OF PYREX 250ML&150ML BEAKERS LAB GLASS (Q5)

　　PYREX 400ML NO.1000-T BEAKER LAB GLASS (Q5)

　　CROUSE HINDS LIGHTING FIXTURE VXH15 FOR HAZ. LOC. FITTING GLASS VAPORGARD (WL25)

　　LOT OF 2 PYREX 150ML NO.1000 BEAKER LAB GLASS (Q5)

　　LOT OF 4 NEW PYREX 5ML VOLUMETRIC FLASK 5640 WITH STOPPER (184-1)

　　LOT OF 5 GOOD USED PYREX 5ML VOLUMETRIC FLASK 5640 WITH STOPPER (184-1)

　　PYREX 1000ML NO.1003 BEAKER LAB GLASS (Q5)

　　SET OF 2 QUARTZ SEMIMICRO CELLS 14-385-910B W/SCC ON THEM (WL32-1)

　　METTLER TOLEDO SCALE GOOD USED H33AR LAB LABORATORY (II4)

　　PYREX 250ML LAB GLASS GRADUATED BEAKER NO 1003 (II3)

　　NEW NIB BACTERIOLOGICAL MHBG0370 49 FIELD MONITORS PORE SZ .45 MILLIPORE (NN2)

　　BEL-ART/FISHER PMR1-010974/404?070305 ALUMINUM FLOW METER SIZE 5 150MM (T4)

　　LOT OF 26 NEW IN PACKAGE THOMAS SCIENTIFIC RUBBER STOPPERS 8742-R95V (WL41-1)

　　NIB BACTERIOLOGICAL MHBG0370 BOX 50 FIELD MONITORS PORE SZ .45 MILLIPORE (NN2)

　　USED KILLARK 455-08-132 HKB KURZ FLOW METER (R1)