Connell Bros. Company Ltd. Offers In-can Preservative Without Formaldehyde and Halogens. Connell Bros. Company Ltd. Is the supplier of coating inks, plastic rubbers, food ingredients and personal and household care. In-can Preservative Without Formaldehyde and Halogens is suitable for preservation of a broad range of water based products. In-can Preservative Without Formaldehyde and Halogens is free of chloromethylisothiazolone, formaldehyde, formaldehyde depots and other aldehydes. It is available in the brand name of parmetol®MBS.