100g REFILLS for your glass diffuser bottles. Our 180g bottle will take two refills and our 100g just one. If your new diffuser is the same scent, the same reeds should be fine, but if it's a different scent, we'd definitely suggest using different reeds. Also, if you've had your reeds for 3 months or more, we'd suggest it's time to change them anyway.
Please note that these reeds do not fit this amber bottle, the reeds and the fragrance are intended for refill and reuse of our clear 100 & 180g Reed Diffuser bottles.