diff --git a/src/core/lib/Base85.mjs b/src/core/lib/Base85.mjs
index f7d667cc..69140d03 100644
--- a/src/core/lib/Base85.mjs
+++ b/src/core/lib/Base85.mjs
@@ -12,15 +12,15 @@
 export const ALPHABET_OPTIONS = [
     {
         name: "Standard",
-        value: "!&quot;#$%&&apos;()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[&bsol;]^_`abcdefghijklmnopqrstu",
+        value: "!-u",
     },
     {
         name: "Z85 (ZeroMQ)",
-        value: "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ.-:+=^!/*?&<>()[]{}@%$#",
+        value: "0-9a-zA-Z.#\\-:+=^!/*?&<>()[]{}@%$#",
     },
     {
         name: "IPv6",
-        value: "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz!#$%&()*+-;<=>?@^_`{|~}",
+        value: "0-9A-Za-z!#$%&()*+\\-;<=>?@^_`{|~}",
     }
 ];
 
diff --git a/src/core/operations/FromBase85.mjs b/src/core/operations/FromBase85.mjs
index fd8c3466..2fec8e2e 100644
--- a/src/core/operations/FromBase85.mjs
+++ b/src/core/operations/FromBase85.mjs
@@ -6,6 +6,7 @@
 
 import Operation from "../Operation";
 import OperationError from "../errors/OperationError";
+import Utils from "../Utils";
 import {alphabetName, ALPHABET_OPTIONS} from "../lib/Base85";
 
 /**
@@ -21,7 +22,7 @@ class FromBase85 extends Operation {
 
         this.name = "From Base85";
         this.module = "Default";
-        this.description = "Base85 (similar to Base64) is a notation for encoding arbitrary byte data. It is usually more efficient that Base64.<br><br>This operation decodes data from an ASCII string (with an alphabet of your choosing, presets included).<br><br>e.g. <code>BOu!rD]j7BEbo7</code> becomes <code>hello world</code><br><br>Base85 is commonly used in Adobe's PostScript and PDF file formats.";
+        this.description = "Base85 (also called Ascii85) is a notation for encoding arbitrary byte data. It is usually more efficient that Base64.<br><br>This operation decodes data from an ASCII string (with an alphabet of your choosing, presets included).<br><br>e.g. <code>BOu!rD]j7BEbo7</code> becomes <code>hello world</code><br><br>Base85 is commonly used in Adobe's PostScript and PDF file formats.";
         this.infoURL = "https://wikipedia.org/wiki/Ascii85";
         this.inputType = "string";
         this.outputType = "byteArray";
@@ -40,7 +41,7 @@ class FromBase85 extends Operation {
      * @returns {byteArray}
      */
     run(input, args) {
-        const alphabet = args[0] || ALPHABET_OPTIONS[0].value,
+        const alphabet = Utils.expandAlphRange(args[0]).join(""),
             encoding = alphabetName(alphabet),
             result = [];
 
@@ -68,7 +69,7 @@ class FromBase85 extends Operation {
                     .map((chr, idx) => {
                         const digit = alphabet.indexOf(chr);
                         if (digit < 0 || digit > 84) {
-                            throw "Invalid character '" + chr + "' at index " + idx;
+                            throw `Invalid character '${chr}' at index ${idx}`;
                         }
                         return digit;
                     });
diff --git a/src/core/operations/ToBase85.mjs b/src/core/operations/ToBase85.mjs
index 3179c6a3..97cc2e72 100644
--- a/src/core/operations/ToBase85.mjs
+++ b/src/core/operations/ToBase85.mjs
@@ -6,6 +6,7 @@
 
 import Operation from "../Operation";
 import OperationError from "../errors/OperationError";
+import Utils from "../Utils";
 import {alphabetName, ALPHABET_OPTIONS} from "../lib/Base85";
 
 /**
@@ -21,7 +22,7 @@ class ToBase85 extends Operation {
 
         this.name = "To Base85";
         this.module = "Default";
-        this.description = "Base85 (similar to Base64) is a notation for encoding arbitrary byte data. It is usually more efficient that Base64.<br><br>This operation encodes data in an ASCII string (with an alphabet of your choosing, presets included).<br><br>e.g. <code>hello world</code> becomes <code>BOu!rD]j7BEbo7</code><br><br>Base85 is commonly used in Adobe's PostScript and PDF file formats.<br><br><strong>Options</strong><br><u>Alphabet</u><ul><li>Standard - The standard alphabet, referred to as Ascii85</li><li>Z85 (ZeroMQ) - A string-safe variant of Base85, which avoids quote marks and backslash characters</li><li>IPv6 - A variant of Base85 suitable for encoding IPv6 addresses (RFC 1924)</li></ul><u>Include delimiter</u><br>Adds a '<~' and '~>' delimiter to the start and end of the data. This is standard for Adobe's implementation of Base85.";
+        this.description = "Base85 (also called Ascii85) is a notation for encoding arbitrary byte data. It is usually more efficient that Base64.<br><br>This operation encodes data in an ASCII string (with an alphabet of your choosing, presets included).<br><br>e.g. <code>hello world</code> becomes <code>BOu!rD]j7BEbo7</code><br><br>Base85 is commonly used in Adobe's PostScript and PDF file formats.<br><br><strong>Options</strong><br><u>Alphabet</u><ul><li>Standard - The standard alphabet, referred to as Ascii85</li><li>Z85 (ZeroMQ) - A string-safe variant of Base85, which avoids quote marks and backslash characters</li><li>IPv6 - A variant of Base85 suitable for encoding IPv6 addresses (RFC 1924)</li></ul><u>Include delimiter</u><br>Adds a '<~' and '~>' delimiter to the start and end of the data. This is standard for Adobe's implementation of Base85.";
         this.infoURL = "https://wikipedia.org/wiki/Ascii85";
         this.inputType = "byteArray";
         this.outputType = "string";
@@ -32,7 +33,7 @@ class ToBase85 extends Operation {
                 value: ALPHABET_OPTIONS
             },
             {
-                name: "Include Delimeter",
+                name: "Include delimeter",
                 type: "boolean",
                 value: false
             }
@@ -45,13 +46,14 @@ class ToBase85 extends Operation {
      * @returns {string}
     */
     run(input, args) {
-        const alphabet = args[0] || ALPHABET_OPTIONS[0].value,
-            encoding = alphabetName(alphabet);
+        const alphabet = Utils.expandAlphRange(args[0]).join(""),
+            encoding = alphabetName(alphabet),
+            includeDelim = args[1];
         let result = "";
 
         if (alphabet.length !== 85 ||
             [].unique.call(alphabet).length !== 85) {
-            throw new OperationError("Error: alphabet must be of length 85");
+            throw new OperationError("Error: Alphabet must be of length 85");
         }
 
         if (input.length === 0) return "";
@@ -84,9 +86,7 @@ class ToBase85 extends Operation {
             }
         }
 
-        if (args[1] === true) result = "<~" + result + "~>";
-
-        return result;
+        return includeDelim ? `<~${result}~>` : result;
     }
 }