Air analysis apparatus; Battery chargers; Computer peripherals; Earphones; Smart watches; USB cables; Wireless chargers; Apparatus and instruments for weighing; Cell phone cases; Protective covers and cases for cell phones, laptops and portable media players; Wearable video display monitors

CHROMATOGRAPHIC COLUMN ACCESSORIES, NAMELY, FITTING USED TO MOUNT TWO CHROMATOGRAPHIC COLUMNS, OF THE SAME INTERNAL DIAMETER, TOGETHER